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Videoconferencia: views of an object - Contenido educativo

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Subido el 18 de enero de 2021 por David G.

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Okay, so today we are going to continue talking about the views of Anocted. 00:00:01
I'm going to use the web page you already know. 00:00:11
I'm going to use this one because I want to explain something. 00:00:19
I'm not going to do an exercise. 00:00:28
it's just to help to help myself to describe the ideas okay I'm going to 00:00:31
follow the PDF here in the virtual classroom there's a PDF the theory okay 00:00:40
we already we already have the task you did the other day and it's correction 00:00:47
and we are going to spend a little bit this PDF this theory okay I want to talk 00:00:53
about the views of an object. What are they, the views of an object? They are the different 00:01:00
ways we have to visualize an object. For example, if I'm looking at the object this way, I have 00:01:07
a view. If I'm looking at the object this way, I have a view. If I'm looking at the 00:01:14
object this way, I have a view. These are, you have the definition here, views are the 00:01:20
different ways we can visualize an object. This is the key word. Different ways we can 00:01:30
visualize an object, ok? How many views are there? What do you think? You can answer in 00:01:34
the chat, using the chat. 1, 2, 3, 4, 5, 6, 7, how many? 3, 3. I have 2 answers. 3, 3, 00:01:43
All of you think that there are three views. 00:01:59
Why three? I think you are answering three because 00:02:03
the other day we drew three views. But 00:02:07
I'm going to use this one. Ok. This is a view. 00:02:11
This is a view. And this is a view. 00:02:15
These are the three ones and we studied the previous day. But 00:02:19
what happens about this one? Is this a view? What do you think? 00:02:23
are more, but we are with three. John Grant. 00:02:27
Okay, so you think that there are more than three. Yes. So, this 00:02:33
okay, Diego, Paula, Lucas, all of you, you agree 00:02:37
that this is a view. And what about this one? This is a view two. 00:02:41
And what about, I cannot rotate the 00:02:45
object more than that. What about this one? 00:02:49
This one in the middle, between the front and the side view. Is this a view? 00:02:53
yes, it is, yes, yes, so all of you 00:02:56
you agree that there are more than 3 views, how many views are there? 00:03:02
6 views, ok, Chloe 00:03:07
maybe you think that we have the 4, I mean the top view, infinite, infinite 00:03:13
Victoria says infinite, 5, 6 00:03:17
infinite, I think that 6, 4 00:03:21
I don't know, ok, a lot of answers, the idea is that there are 00:03:24
infinite views. For instance, this one is a view. 00:03:29
It's the front view. What happens if I move it a little bit? 00:03:33
It's different. It's not the front view. 00:03:37
It's similar to the front view, but it's not the front view. 00:03:41
So, it's a different one. What happens if I move it a little bit 00:03:44
more? It's not the same than before. It's a new one. What happens 00:03:47
if I move it a little bit more? It's not the same 00:03:51
one than before. It's a new one. What happens if I move a little bit? 00:03:55
So, there are infinite views. The moment I move the object 00:03:59
a little bit, I have a new one. A little bit, I have a new one. 00:04:03
So, and how many 00:04:07
infinite views are there? I mean, how many little bits are there? 00:04:09
Infinite. So, we have infinite views. 00:04:15
This is the first thing we need to take into account. There are infinite views. 00:04:18
and what the purpose of the views why do we need views you don't know because if 00:04:22
I have a 3d object for instance for instance for instance this one I want to 00:04:35
I'm sharing my screen imagine have this one the keys of my car there are 00:04:43
infinite views of it, ok? But what are the purpose of them? This is a 3D object, do 00:04:51
you agree? I hope so. The idea is that if I want to send information about this 00:05:02
one to you, you are looking at it using a screen. How many dimensions can you find 00:05:08
in the screen. What do you think? I'm going to open the chat 00:05:17
again. How many dimensions are there on the screen? Four. 00:05:21
Four dimensions. How many 00:05:25
dimensions are on your screen? Here. You are looking at my keys, the keys of my 00:05:31
car. How many dimensions are on the screen? Three? No. 00:05:35
Two. Two dimensions. 00:05:40
The long and the height. 00:05:43
ok, the lung and the eye, two dimensions 00:05:50
no more than that, ok 00:05:54
so, can you guess the problem? 00:05:56
the problem is that I'm 00:06:00
the problem is that I'm trying to represent 00:06:02
a 3D object using two dimensions 00:06:10
can you guess the problem? can you guess what the problem is? 00:06:13
the problem is that I'm losing information 00:06:18
if I have a 3D object and I can only represent 00:06:21
two dimensions, I am losing one dimension 00:06:25
this is the problem, so how can we solve it? 00:06:29
because I am trying to send information to you, I am trying to 00:06:33
describe how my keys are, so the idea 00:06:37
is that I will send, I will show more 00:06:41
than one single view to you, because one single view is not enough 00:06:45
to represent the object. I have infinite views 00:06:49
but sending infinite views is a problem too. I cannot 00:06:53
send infinite views. So, how many views 00:06:57
are enough to give full information of the object? What do you 00:07:01
think? We already know that there are 00:07:05
infinite views. Six. John Pratt says six. 00:07:09
And the other ones, what do you think? No say. I don't know. It's better than no say. 00:07:13
And the rest of you? What do you think? 00:07:24
I don't know, I don't know, I don't know. Okay. Six views 00:07:33
are enough to give enough information, to give full 00:07:37
information about the object. For instance, imagine I want to open 00:07:41
the period. This is the object. Or I also 00:07:45
have the one I opened the previous day. 00:07:52
I want to open it again. Use of an object. 00:07:56
this one is the same idea than this one these are we have the six views of the object 00:08:05
can you look at the guy looking at the object from different positions here in this kind of clouds 00:08:13
we can see what the guy is looking is seeing you can see the view so if using this sixth position 00:08:21
you, I mean, we will be able to see everything about the object. 00:08:30
So, six views are, although there are infinite views, 00:08:35
six views are enough to send all the information 00:08:38
about this object. So, for instance, if I want to send, if I want 00:08:42
to describe this 3D object using a 2D 00:08:46
screen or a 2D sheet 00:08:49
of paper, I will be able to draw these 00:08:54
six views and I will be able to give you the full information 00:08:58
about the object. Okay? So, I repeat, there are infinite views 00:09:02
but six are enough to give all the information to you. Okay? 00:09:06
So, what else? 00:09:11
Let's go back to the theory. So, there are 00:09:14
six views to describe, to give the full 00:09:18
information. They are, the names of them are given 00:09:22
by the position from which we are looking at the object. 00:09:26
If we are looking at the object from the front, we have the front view. 00:09:30
If we are looking at the object from the back, we have the back view, 00:09:34
the same for the top view, the same for the bottom view, 00:09:38
the same for the left side view, the same for the right side view, okay? 00:09:42
And if I want to draw them, I will have to draw them following the idea of the projections, okay? 00:09:50
It means that I will respect some relative positions, and these are the relative positions. What is once? Because of something that I want to open in the virtual classroom, I made a mistake, I'm going to open it now. I'm going to open a video. Let's see if it works. 00:09:58
I thought I had opened it but I didn't. I'm going to open it in one second. 00:10:19
Here video tutorial is one. I'm going to open it. 00:10:31
okay I'm opening and opening it I will go back to my to the student view one 00:10:49
second student now I'm looking at the virtual classroom I can see they look at the virtual 00:11:01
classroom the same way you look at it and now I want to open this video 00:11:10
tutorial let's see if this is the correct one yes it is 00:11:14
I made a mistake. I will try to open it in a different way. 00:11:26
I made a mistake. I didn't open it before, so that's why I made a mistake. 00:11:42
I'm sorry. I will try to open it again. 00:12:13
Ok, I have it, I think I have it. Ok, it's here, I didn't make a mistake. 00:12:38
Ok, I'm sorry, now I have it. This is my object, similar to the one I'm showing to you in www.educacionplastica.net. 00:13:03
So, we are going to draw the different views. Imagine there will be a cube around the object. 00:13:13
Can you see the cube around the object? 00:13:23
So, we are going to draw each view 00:13:27
on the opposite side of the cube. Let's start with, for instance, 00:13:31
the green one. This is the front view. The yellow one 00:13:35
is the front view and is projected, the view is projected on the back. 00:13:39
Can you see it? 00:13:43
The green one is projected, it's the left side view and it's projected on the right side of the cube. 00:13:47
The top view is... 00:14:01
And this is the top view. We are looking at the object from above, but the top view is projected on the bottom side of the cube. 00:14:05
Now we have the three views that have been projected on the sides of the screen. 00:14:17
Now we remove the object that was in the center. 00:14:32
And now we will unfold. Do you understand unfold? Fold is a verb, doblar, unfold, the opposite one, desdoblar. 00:14:37
We will unfold 00:14:45
So if we unfold the cube the front view is in the middle the left side view is on the right and the top view is 00:14:57
On the bottom forget about these walls from the in-hand plan. I don't know what this video is using 00:15:04
but 00:15:10
This is why this is why 00:15:11
This is why... I don't know if there are questions. Yes, no, there are no questions. 00:15:13
This is why when we draw everything on... 00:15:18
When we draw the six views of an object, everything seems to be on the opposite position. 00:15:23
For example, the left side view is on the right, the right side view is on the left, 00:15:31
the top view is on the bottom, and the bottom view is on the top. 00:15:35
back view is here, because these different views have been projected on the different 00:15:40
sides of the object, of the cube, and when we unfold the cube everything seems to be 00:15:46
on the opposite way. And when we draw the different views of an object this is the way 00:15:51
we represent them. That's why in this exercise, the one we did the other day, the front view 00:15:57
was here you remember when i draw the front view i draw it here when i draw the left side view the 00:16:04
blue one i draw it on the right and when i draw the top view i draw it on the bottom that's why 00:16:15
these are the positions to draw everything okay we understand if there is any questions you can 00:16:26
open your microphone or you can write something in there I mean you can write 00:16:33
anything in there I don't understand Jorge Jimenez Romero why what you don't understand 00:16:38
can I talk? yes of course when the video I don't understand very well the 00:16:44
video okay let's explain it step by step we have the object okay do you 00:16:54
Do you agree? Open the micro, both hands, keep it open. 00:17:02
What has to be the object? Do you understand that the object 00:17:07
can be in the middle of a cube? 00:17:11
Yes. Ok, imagine the object and around the object 00:17:15
we have a cube, ok? Ok. 00:17:19
Ok, now we have three views. We are going to 00:17:23
draw just three of them, ok? We have the front view that is the yellow one, 00:17:27
one, the left side view that is the green one and the top view that is the blue one. 00:17:31
Do you agree? 00:17:36
Okay. 00:17:37
Okay. 00:17:38
Yes, yes. 00:17:39
So, we will now the front one that is the yellow one is drawn here on the back of the 00:17:40
cube. 00:17:48
It means it's projected, it's like drawing it and pushing it to the back of the cube. 00:17:49
You draw it and at the same time you push it to the back of the object, do you agree? 00:17:55
Yes, yes. Okay, fine. Now, we do the same for the left side view, the green one. We draw it and we project it on the right. We push it on the right. Do you understand the idea? Easy. Yes, it's easy. We do the same for the top view. 00:18:00
ok, now we have the three of them 00:18:22
we remove the object 00:18:26
and the moment we have removed the object we will unfold 00:18:28
do you understand unfold? I'm going to try it on the chart 00:18:34
unfold is the opposite of fold 00:18:36
fold means doblar, unfold desdoblar 00:18:42
so now we will unfold 00:18:47
We will unfold the video and that's why we have the front view here, the left side view 00:18:51
here and the top view here, do you understand now? 00:19:11
oh okay okay i understand and it's it's not just about their relative positions it's just 00:19:14
it's i mean it's also about keeping the alignment for instance here there is alignment 00:19:22
this one and this one they have the same height they begin at the same position and they finish 00:19:29
at the same position okay you can see that they keep the alignment and the same with the top and 00:19:35
the front view then here they have the same width this much the same width okay we are keeping the 00:19:41
alignment and if i go back to the pdf i was trying to explain that it was here we have the sixth 00:19:49
position but they are keeping the alignment can you see that we are keeping the alignment 00:19:59
I can't understand the thing you said. 00:20:04
What's the problem? 00:20:11
Alignment. 00:20:14
Alignment, what's the meaning of alignment? 00:20:17
In Spanish, I want to write it. 00:20:20
Wait a second, I'm looking for the chat. 00:20:22
Alignment. 00:20:26
I don't think this is the correct spelling 00:20:30
alignment, alignment means alineación 00:20:35
to keep the alignment means that 00:20:39
están alineados, do you agree? 00:20:43
yes, yes, I'm going to check the spelling 00:20:48
but I think it's the correct one 00:20:51
alignment, it was the correct spelling 00:20:54
So, it means that they keep the alignment. 00:21:04
They están alineados. 00:21:07
Can you see that the six views are keeping the alignment? 00:21:09
Oh, yes. 00:21:14
It's not floating here. 00:21:16
This one is not floating here. 00:21:18
They are keeping the alignment. 00:21:20
Están alineados. 00:21:23
And the rest of you, do you understand? 00:21:24
So, it's important when we draw the object, 00:21:30
I mean, when we draw the views, we have to respect the relative positions 00:21:35
and we also have to keep the alignment. 00:21:39
And this is because of the cube. This cube we have unfolded 00:21:43
because this is the idea. We draw the different views of an object 00:21:46
and we push them to the opposite side. And then we unfold the cube 00:21:51
and that's why everything seems to be in the opposite position 00:21:55
but they are not. And that's why they have to keep 00:21:59
there like that, ok? No more questions? 00:22:03
Nobody is writing, so I think there are no more 00:22:09
questions. Let's move on. We have six views 00:22:11
that have six different 00:22:15
projections, ok? But usually, instead 00:22:19
of drawing six views, we will only 00:22:23
draw three of them. Why? Because although 00:22:27
three of them, they don't provide the full information about 00:22:31
the object. They provide enough information. 00:22:35
Okay? Can you see the idea? 00:22:39
Because drawing six views can be a little bit 00:22:43
long. Usually we need to spend 00:22:47
more time than expected to draw the six views. And usually 00:22:49
with three views is enough 00:22:55
to imagine the whole, the object 00:22:58
by itself, ok, so usually we draw just three of them 00:23:02
we are not 100% sure we have the full information 00:23:06
but usually we have enough information 00:23:10
now, here we have the names of the three 00:23:12
dimensions, the names of them are height 00:23:22
in Spanish we say alto, here we have height, we have length 00:23:26
in Spanish we say largo, and we have width, in Spanish we say 00:23:30
ancho, ok, but 00:23:34
which one is the height, which one is the length, which one is the width 00:23:37
interesting questions, or more or less the same question 00:23:41
where is the front view 00:23:46
we need to 00:23:48
we need to decide which one is the front view 00:23:52
If I have an object, like this one, the one we are looking here, which one is the front view? 00:23:58
Is this one? Is this one? Is this one? Is this one? We don't know. 00:24:06
We need to agree. We need to decide, all of us together, if the exercise was drawing this object, 00:24:14
we were supposed 00:24:21
to decide, all of us, which one is the 00:24:25
front view. Usually, or not usually, 00:24:29
always, the moment we have decided which one is the front view, 00:24:33
we will draw an arrow with the object. For instance, 00:24:37
I will look for an example 00:24:41
... 00:24:45
I have some exercises, but I don't want 00:24:53
for example, yes, this one is fine. Imagine I have 00:25:02
this cube. Can you see it? Which side of the cube 00:25:06
is the front view? All of them are good enough 00:25:11
so we need to decide which one is the front view. Front view in Spanish 00:25:14
we say alza. So we usually 00:25:19
with the view of the object, the one that 00:25:22
when we draw an object using the perspective 00:25:26
here in the first year of ESO we are not going to draw 00:25:30
these types of representation. We are going to use just the 00:25:34
three views of an object. But when we draw the object using the perspective 00:25:38
we will also have to add an arrow pointing 00:25:42
which one is the front view. So if this one is the front view 00:25:46
we know that this one is the right side view 00:25:50
we know that this one is the top view, ok? 00:25:54
Could we draw the arrow here? Yes, why not? 00:25:58
If we draw the arrow here, this one would be 00:26:02
the front view, the side with the three, the side with 00:26:06
one would be the left side view, and again this one would be 00:26:10
the top view. Which one is better? Both of them are fine. 00:26:14
Usually I prefer this one, the arrow here, because this way 00:26:18
I'm sorry, we will be able to draw front, left side view 00:26:21
and top view in a really easy way, ok 00:26:25
so usually we need an arrow to complete the 00:26:29
perspective drawing of the object, because this way we will decide which one is 00:26:32
we will agree which one is the front view, ok 00:26:37
questions, no questions 00:26:40
there are no questions, ok, so let's move on a little bit 00:26:47
with the theory. We already know the names 00:26:57
of the three dimensions, height, length, and width. In Spanish, alto, largo, y ancho. 00:27:01
Okay, you have to know them. 00:27:08
It's part of the vocabulary of this unit. We also 00:27:10
need, okay, dimension line and auxiliary line. 00:27:13
We will study them later. Forget about them. You can't read 00:27:18
them. You can't understand them. But later we will study. I prefer 00:27:21
teach them using the context 00:27:25
and their context. Now let's focus a little bit 00:27:28
in these pieces of vocabulary. Sketches, diagrams 00:27:32
and technical drawing. Sketch 00:27:34
in Spanish we say boceto 00:27:36
Sketch is hand drawing with just 00:27:40
the fundamental ideas 00:27:43
For example, if I 00:27:46
want to draw 00:27:49
this object. Imagine I want to draw this object. I can draw it this way using my sheet of paper 00:27:52
and I will try to draw it the better I can. Something like that. I'm drawing it too fast 00:28:02
take it into account. More or less it's the same object. More or less. I know I have drawn 00:28:19
it too fast. I can do better with more time at anyway. This one would be a sketch bofeto 00:28:26
of my object because it's hand-drawing with just the fundamental ideas, ok? 00:28:36
This is the sketch of my object. This one and this one. This is the object, imagine 00:28:47
this is the real one, imagine this is my sketch, ok? We also have the diagram. Again, it's 00:28:53
a handwriting, but it has all the information needed, including measures. 00:28:59
In some days, we will learn how to add measures using dimension lines and auxiliary lines. 00:29:06
Using the sketch, I add the dimensions, for example, something like that. 00:29:17
For instance, I don't know, 3. For instance, I don't know, 5. 00:29:27
And I complete all the dimensions of the object. 00:29:36
This one, for instance, three again. 00:29:43
If I add all the lines of the object, I will have the diagram. 00:29:45
Diagrama in Spanish. 00:29:51
No es un boceto, es un diagrama. 00:29:52
Because the diagram has more information than the sketch. 00:29:54
And the technical drawing is a diagram, but instead of drawing it this way, 00:29:57
I will draw it using a ruler and a compass or a computer. 00:30:04
I can draw objects using the computer and this way I will 00:30:11
have the exact picture of the object, the exact views of the object 00:30:15
in a really precise way, ok? So remember 00:30:19
these three pieces of vocabulary. Sketch, effecto, handwriting with no 00:30:23
information, diagram, handwriting with the information 00:30:27
technical drawing using a computer or a compass and a 00:30:30
ruler and again with all the information, ok? 00:30:35
So, these are 00:30:38
the views of an object. 00:30:42
Questions? No questions. 00:30:48
I can read no. It means that there are no questions. 00:30:56
Ok, let's move on. 00:31:00
Let's do an exercise. 00:31:07
You will do it later, but because we have time, we are going to do it now. 00:31:09
I don't know where is it. I'm going to look for it. 00:31:13
Here. 00:31:24
I don't know where is it. 00:31:29
Use other scales. 00:31:41
Okay, this one. 00:31:47
An interesting one. 00:31:52
You will do it in the future. 00:31:54
So, there are some problems 00:31:55
because it's not... I have to improve it 00:31:57
but anyway 00:31:59
it was just a first approach 00:32:00
to the exercise but I think it will work. 00:32:03
Imagine we have this object. 00:32:05
Okay. And imagine these are the six views of this object. We are going to place, we are going to click and drag and we are going to place them on their relative positions. Okay. This one will be our exercise. But you need something, you need to know something else. These dotted lines, what are they? 00:32:08
Imagine the object was transparent. 00:32:29
I'm going to explain it using this one. This one is not a good 00:32:33
example. I want to look for something that is a better example. 00:32:39
Yesterday, I mean on Monday, 00:32:43
this one. This one is a good example. 00:32:47
Here, we can draw continuous lines. 00:32:52
But we can also draw dotted lines. Do you understand dotted lines? 00:32:56
dotted line 00:33:00
what does it mean, dotted line? 00:33:04
Linea punteada, because dot in English 00:33:08
means punto, dotted lines, linea punteada 00:33:16
so if I go back to this one, I can draw 00:33:20
continuous lines, but I can also draw dotted lines 00:33:24
I think on Friday I draw 00:33:28
the views of the object. I draw something like that. 00:33:32
Front view. I will draw it in one minute. This is the front view. 00:33:36
Front view is something like that. This one 00:33:43
is this one. This one is this one. And this 00:33:51
slope. Pendiente. Slope. 00:33:55
Slope here. 00:33:59
And this slope is this one. 00:34:05
this, this one, this, this one, and I'm going to draw 00:34:09
now the top view, remember that to draw the 00:34:13
top view, we rotate from the top, this way 00:34:20
the same way, the guy 00:34:23
I think I have closed it, ok, anyway, remember 00:34:26
how we rotate from the top 00:34:31
from the front to the top, I rotate this way 00:34:34
So, this is the front view. 00:34:39
And now, the side view, interesting one. 00:34:42
If I look at the object from this side, I will be able to see something like that. 00:34:53
Do you agree that these are the three views of the object? 00:35:06
Any question, any problem, any difficulty? 00:35:14
No? Anyway, so I think you agree, no? 00:35:17
I think that you agree that these are the three views of the object. 00:35:20
But it's not complete. It's not complete because 00:35:23
imagine the object was transparent. 00:35:27
Imagine the object was transparent. 00:35:30
In a previous version, the object, we could 00:35:39
make it transparent. Now we couldn't. Now we cannot, I mean. 00:35:43
But anyway, imagine the object was transparent. 00:35:48
Imagine the object is here, but the object is transparent. Imagine it. 00:35:50
what would be able if the object was transparent? 00:35:54
we would be able to see that this slope is continuing 00:35:58
can you imagine it? the slope is continuing 00:36:02
if the object was transparent, we would be able to see 00:36:05
the slope, can you imagine it? 00:36:10
no? 00:36:14
I want to draw the dotted line, maybe with the dotted line it would be easier 00:36:17
this dotted line is representing 00:36:33
that the slope, that this one 00:36:37
can you see this one? the slope is continuing, continuing 00:36:41
if the object was transparent, imagine this one 00:36:45
is solid, we cannot see through it, but if the 00:36:49
object was transparent, imagine the object was made of glass, can you imagine the object 00:36:53
made of glass? I think you can, you don't understand 00:36:57
Listen to me one second. Imagine the object is made of glass. 00:37:02
Can you imagine the object made of glass? You can, of course. 00:37:06
If this part of the object was made of glass, you will, obviously, 00:37:10
you will be able to see this one, because there is nothing between your eyes and 00:37:14
this slope. And here, if the object was made of glass, 00:37:18
you will be able to see through it. You will be able to see that this 00:37:22
slope is continuing. And because this 00:37:26
object is made of glass, you will be able to see 00:37:30
the slope, the continuing slope. 00:37:34
To represent this one, to represent the idea that we will be able to see it 00:37:38
if the object was transparent, we use the dotted line. 00:37:42
Do you understand it now? 00:37:46
You can open the 00:37:55
microphone and you can speak in Spanish if you want. 00:38:06
You mean that it is made of glass only in the part of the view? 00:38:10
Of course, if the object is made of glass, you could see through, if the object was made of glass, even if it was only one part, I don't care, you could see what is behind, right? 00:38:21
Yes, but if the object, everything or only what you see? 00:38:31
what you need let's see if the object the object is never going to be totally you are thinking and 00:38:35
if it is made of crystal everything is transparent with which I do not see anything it is like invisible 00:38:41
well, imagine that it is not transparent at all that it is a little transparent and that here on the 00:38:46
surfaces it is like a little dirty imagine it like that and then if I place the object that 00:38:51
were totally glass with the surfaces a little dirty this part would not 00:39:01
there would be no problem because you are always seeing it 00:39:05
ok because there is nothing that prevents you from seeing it but if this was transparent with 00:39:08
this part a little dirty you would not see through the object that there is something there 00:39:12
and the way to represent in the drawing that I would see something there if the 00:39:18
the object is transparent is using these discontinuous lines 00:39:25
ok ok I understand now if the others 00:39:31
formerly this exercise you could make the transparent object but they have 00:39:38
removed that option is convinced that it followed but they have not removed it 00:39:42
placed some new possibilities such as the profile change 00:39:46
but but that they have deactivated it is a 00:39:53
because it was very cool, it made that transparent object and you could see it. 00:39:57
I don't know if around here... 00:40:04
The others, do you understand it or not? 00:40:06
I'll explain it another way. 00:40:09
There were others around here that maybe... 00:40:11
wait, maybe... 00:40:15
they have removed it from here too. 00:40:17
It implied that it became transparent, but that option has been removed. 00:40:22
Questions? 00:40:29
I understand, Lucas says yes. 00:40:31
And the rest of you, I hope you are understanding. 00:40:35
So now, let's do this exercise. 00:40:38
Yes, yes, okay, I understand. 00:40:42
Let's do this exercise, the one I was trying, this one. 00:40:44
Imagine, we have this object. 00:40:51
We have the six views, according to the way the cube can be unfold. 00:40:54
Do you understand the idea? 00:41:01
So, we are going to draw the different views. 00:41:01
but we already have them. We have six views that are 00:41:06
the front, the back, the left side view, the right side view, the top and the bottom. 00:41:10
So, we will click and drag and place them 00:41:14
in their correct positions, ok? 00:41:18
I think 00:41:22
we are going to do it together, ok? 00:41:28
This is number one, this is two, this is three, 00:41:38
4, 5 and 6, ok? 00:41:41
so, think about it, I will give 5 minutes to you 00:41:44
and think about where they have to be placed, remember 00:41:48
right side view on the left, front view, left side view 00:41:52
on the right, and this is the back view, bottom view 00:41:56
on the top, and top view on the bottom, and you have 6 views 00:42:01
1, 2, 3, 4, 5 and 6, 6 about 00:42:04
six about where you have to place them. 00:42:09
Five minutes to the exercise. 00:42:13
Do you understand the exercise? 00:42:14
Take a sheet of paper and think about it on a sheet of paper, okay? 00:42:19
¿Se entiende? 00:42:32
Decidme algo. 00:42:32
No decís nada, es que sí, vale. 00:42:42
Me dice Ian que sí, vale. 00:42:43
Pues entonces, os dejo aquí el objeto. 00:42:44
Yes, yes, vale. 00:42:46
Pues os dejo aquí el objeto. 00:42:47
Este. 00:42:50
Ah, y lo vais a hacer durante cinco minutos. 00:42:51
Os doy cinco minutos. 00:42:53
Are you finished? You have to imagine it's transparent. 00:43:23
Okay, you have finished. Anyway, we will correct. If you have had 00:47:37
any problem, don't worry. Pay attention to the correction and ask whatever you need 00:47:44
to ask, okay? I repeat, I cannot read your minds. If you don't ask, 00:47:48
it's not my fault, it's yours. So, anyway, let's correct it. 00:47:52
Let me see, let me see... Here. For example, 00:47:56
number one. Okay, anyway, I'm going to do it in a different way. 00:48:00
Let's start with the front view. The front view is going to be drawn here. 00:48:04
Do you agree? In the middle. Which one is the front view? What do you think? 00:48:09
Number one, two, three, four, five and six. 00:48:13
Three. Iyan says three. And the rest of you, what do you think? One, two or three? 00:48:16
Two. 00:48:21
Two? This one is the front view? 00:48:33
Well, anyway, we have to decide which one is the front view. 00:48:36
I didn't say anything and you didn't answer. 00:48:43
Every time we find an object, we need to decide which one is the front view. 00:48:46
I'm going to decide that this one is the front view, ok? 00:48:52
So, if we decide that this one is the front view, the front view will be this one. 00:48:56
Do you agree? It was my fault. 00:49:02
default. Anyway, making mistakes is a good way to learn. 00:49:04
And you didn't ask about the front view. As I said some minutes ago, 00:49:08
we have to decide which one is the front view. We are going to decide that number 3 00:49:12
is the front view, ok? If we look at the object from this 00:49:16
position, we will see this one, this one, this one, 00:49:20
this one, and the slope is this one, ok? This is the front view. 00:49:24
Ok, the majority of you say 3, so 3 00:49:28
all of you just javier navas has decided to anyway it's not a big problem javier don't worry 00:49:32
imagine it's not a problem but this is you were free to decide we have decided that this is the 00:49:39
front view okay now if this is the front view which one is the is the left side view number 00:49:44
1, 2, 4, 5, or 6. What do you think? 00:49:51
Left side view. 1, 2, 4, 5, or 6. 00:49:56
2, 2, 2. Okay, 2, 2, 2. 00:50:01
Okay, all of you think that is number 2. 00:50:04
So, number 2, left side view has to be drawn here. 00:50:07
Do you agree with the position? 00:50:12
Left side view on the right. Okay, do you agree? 00:50:15
no, Izan, what's the problem? 00:50:19
Izan, the left side view is always drawn on the right 00:50:23
everything is always on the position that looks 00:50:26
the strange one, but this is the way 00:50:30
this is because they have been projected to the cube and then we unfold the cube 00:50:34
Izan, do you understand? You can open your microphone and you can talk if you want to 00:50:38
ok, ok, we understand Izan, perfect 00:50:43
I'm okay and now I understand okay and let's go back what about the top view which one is the top 00:50:50
view one four five or six this one needs a line here one four five or six which one is the top 00:51:02
view six six okay you all of you you agree that the top view is number six so we click and drag 00:51:15
Where do I have to click it? To drag it? Here or here? 00:51:23
It's the top view. Where do I have to drag it? 00:51:28
On the bottom or on the top? Down. 00:51:31
Jorge Jimenez says down. And the rest of you, what do you think? 00:51:35
Up or down? It's the top view. Where do I drag it? 00:51:39
Down. Okay, down. You are right. 00:51:43
I have to drag it on the bottom. Because everything 00:51:46
has to be in the opposite position. The one that seems the opposite one. Now, I'm going 00:51:51
to draw the, this one has to be the, because it's on the left, it's going to be the right 00:51:57
side view. Which one is the right side view? 1, 4 or 5? What do you think? 1, 1, 1, ok. 00:52:05
All of you that the right side view is the, is number 1. Number 1 is going to be here. 00:52:13
Here, there are dotted lines, because we can imagine that if we are looking at the object from this position, 00:52:20
we will be able to see a cube. But if the object was transparent, 00:52:26
we would be able to see this one, that is this one, and we would be able 00:52:31
to see the slope, that is this one. Can you see it? I think it's easy. 00:52:36
Okay? Any problem? Any question? No? Okay. 00:52:41
Let's finish the exercise. What happens with the back view? 00:52:46
The back view is the one that is here. Number 4 00:52:50
or number 5? 5. 00:52:54
This one is the back view. 5, 5, 5, 4. Victoria says 4. 00:53:03
And Victoria is right. 00:53:14
The back view is number 4. That's how I look at it. 00:53:16
Looking at the back view sometimes is difficult because 00:53:21
because usually we are not used to it. 00:53:24
This is the back view. If we were looking at the object from 00:53:28
behind, we would see a cube. 00:53:32
But if the object was transparent, we would see 00:53:36
this one, this one, and this one. 00:53:40
We would see three pieces of surfaces. 00:53:44
This one was this one, this one 00:53:48
was this one and this one was this one. 00:53:52
So we have three pieces of surfaces so this is the back 00:53:56
view. And the last one is obviously 00:54:00
the bottom view and it's going to be tracked here 00:54:04
on the top. And imagine yourselves looking at the object from above 00:54:08
you would be able to see a kind of a square 00:54:12
but if the object was transparent you would be able 00:54:16
to see this L that is this one 00:54:20
and the slope that is this one. So these are 00:54:23
the six views of the object places on 00:54:27
their correct positions and using the dotted lines. 00:54:32
I was referring to the four. 00:54:35
Anyway, don't worry. We are just learning. 00:54:44
About the dotted lines, you need to know the meaning of them. 00:54:48
if we do exercises in the class 00:54:52
or using the virtual classroom 00:54:55
I'm not going to ask you to draw dotted lines 00:54:58
because sometimes it's difficult 00:55:01
but you have to understand the meaning of them 00:55:02
and you have to recognize them 00:55:06
if you find an object with them 00:55:08
so we have finished 00:55:12
with the theory and with the exercises today 00:55:16
any questions before we leave? 00:55:19
Something you want to ask? Anything you want to ask? Nothing? Nothing to ask? No? Yes, Iyan, you have to make a unit now. 00:55:22
What do you mean to make a unit? You can open the microphone if you want to, you can speak in Spanish if you want to. 00:55:40
We have to make a new unit for this? 00:55:49
We are in a new unit, yes. 00:55:55
Okay. 00:55:58
Who else wanted to ask? 00:56:00
Yes, because why is it in the opposite position? 00:56:03
Why are they in the opposite position? 00:56:09
Yes. 00:56:12
I'm sharing the screen with you, I think. 00:56:14
Do you remember the video we watched before? 00:56:18
Where is it? I'm going to open it again. 00:56:22
Guillain, did you ask about this before or was it someone else? 00:56:30
It wasn't me. 00:56:37
It was you. It wasn't you. 00:56:39
The idea is, look. 00:56:44
I'll explain it in Spanish. 00:56:46
This is the front view. 00:56:50
The raised, we say in Spanish. 00:56:53
The yellows. 00:56:55
Do you agree with me? 00:56:56
Yes. 00:56:59
Where have we drawn them? 00:57:00
Behind. 00:57:01
It's like if we saw it and pushed it back. 00:57:01
What happens with the left side view? 00:57:05
The profile, we say in Spanish. 00:57:07
The green. 00:57:08
We're seeing it from the left, but we push it to the right. 00:57:09
Here. 00:57:13
And what happens with the top view? 00:57:14
which is the blue one, we see it from above but we push it down 00:57:15
so once I have the three, the six, it could be six perfectly 00:57:21
and I remove the object, the next step is to unfold the cube 00:57:30
We have to select the two. 00:57:36
We have to select the two. 00:57:38
It's a bit... 00:57:40
It's a bit... 00:57:42
That's why the top view is down here 00:57:44
and that's why the left side view is on the right. 00:57:46
Okay, where is it? 00:57:48
That's why everything is apparently 00:57:51
in the wrong position, 00:57:53
which is not wrong. 00:57:55
It's all the other way around, 00:57:57
and it's because it's projected on a cube 00:57:59
and when it's projected on a cube 00:58:01
it's on the opposite side of what 00:58:03
more questions no more questions if there are no questions no okay so we are going to leave 00:58:05
there are no more no more questions okay you can leave the classroom the virtual classroom you want 00:58:30
Thank you. 00:58:49
Autor/es:
David Gonzalez Arroyo
Subido por:
David G.
Licencia:
Reconocimiento - No comercial - Compartir igual
Visualizaciones:
75
Fecha:
18 de enero de 2021 - 13:36
Visibilidad:
Público
Centro:
IES MARIE CURIE Loeches
Duración:
58′ 56″
Relación de aspecto:
16:10 El estándar usado por los portátiles de 15,4" y algunos otros, es ancho como el 16:9.
Resolución:
1152x720 píxeles
Tamaño:
136.85 MBytes

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