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Complex Machines part II (2nd grade)

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Subido el 29 de abril de 2020 por Beatriz C.

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Let's begin with exercise four at the top of page 103. 00:00:00
In this exercise, you will look around your home and try to find a complex machine. 00:00:08
So we will not be looking in the classroom. 00:00:17
Instead, you will look around your house, maybe in the living room or in the bedroom, 00:00:20
and try to find a complex machine. This might be for example a computer 00:00:27
or maybe even a television that you watch and use for fun activities. Now let's move on to exercise 00:00:37
five. Look and write simple or complex under each machine and tool. You will label under each whether 00:00:49
it is simple or complex. So remember that simple tools only have one or two parts and they do 00:01:05
simple tasks. Complex machines make difficult tasks easier, and they do a lot of different 00:01:16
things and have many different parts. So please write under each picture whether it is simple or 00:01:25
complex. For example, this axe, if you can think and remember, you can recall that 00:01:35
an axe is a wedge, and a wedge is a simple machine. However, a telephone is a 00:01:46
complex machine because there are many different parts inside of the screen 00:01:58
that make it work and because the function of the telephone is much more 00:02:05
complex than a simple machine. Now we will move forward to exercise six. On the 00:02:12
left side we will write three simple machines and on the right side we will 00:02:26
write three complex machines. First, I will read you this box to make it easier to fill 00:02:34
in with the correct machine and its description. A simple machine has a few or no moving parts. 00:02:42
A complex machine is a combination of simple machines, so it has many simple machines inside 00:02:52
of it all together working. A complex machine is a combination of simple machines and has 00:03:00
parts that move. Some complex machines need electricity to work, so you need to plug it 00:03:09
into the wall or you need to put batteries inside for it to work because it needs electricity 00:03:16
and power. So on this side, you will write simple machine at the end of each sentence. 00:03:23
And you will fill in two missing simple machines. So as you can see, we have crossed off lever 00:03:36
because we have our first example. A lever is a simple machine. Now think of the remaining 00:03:44
machines that we have above and write 00:03:52
two more simple machines. A is a simple machine 00:03:57
and A is a simple machine. Then you can cross off above 00:04:05
what you have filled in with the spaces so that you can continue forward on 00:04:15
the right side and it makes it easier to fill in with our complex machines. 00:04:22
Okay, so let me help you with the first example. 00:04:29
Which of these is a complex machine? A computer is a very good example of a 00:04:34
complex machine because there are many moving parts in a 00:04:44
computer and it needs electricity, power, 00:04:48
for it to work. So I will write in this line, a computer is a complex, and you can write below 00:04:54
if you run out of space, machine. A computer is a complex machine. And now I can cross off 00:05:20
computer and fill in the other blank. Complete the sentences with two more examples of complex 00:05:34
machines that you can choose from here. Okay, excellent work class. I'll see you next time. Bye-bye. 00:05:44
Autor/es:
Beatriz
Subido por:
Beatriz C.
Licencia:
Reconocimiento - No comercial
Visualizaciones:
25
Fecha:
29 de abril de 2020 - 11:20
Visibilidad:
Clave
Centro:
CP INF-PRI SAN PABLO
Duración:
05′ 54″
Relación de aspecto:
16:9 Es el estándar usado por la televisión de alta definición y en varias pantallas, es ancho y normalmente se le suele llamar panorámico o widescreen, aunque todas las relaciones (a excepción de la 1:1) son widescreen. El ángulo de la diagonal es de 29,36°.
Resolución:
848x480 píxeles
Tamaño:
54.94 MBytes

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