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Subido el 20 de enero de 2021 por Laura De La C.

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Ok, this time we are going to start with natural science and today we are going to see the vertebrates, the reptiles and the fish. 00:00:01
Ok, so open the book from the page 48 and 49. Finger ready because we are going to start reading. 00:00:11
One, two, reptiles spend most of their time on land, but some spend part of their time in water. 00:00:18
Reproduction. Most reptiles are aviparous. They lay their eggs on land. 00:00:28
Baby reptiles look like adult reptiles when they hatch. 00:00:37
Nutrition 00:00:41
Most reptiles are carnivores. 00:00:44
Some are omnivores and eat plants, insects and small animals. 00:00:49
Respiration 00:00:56
They breathe with their lungs. 00:00:57
Physical characteristics 00:01:02
Most reptiles have four limbs, but some have no limbs. 00:01:04
They have scales which cover and protect their body. 00:01:11
Some reptiles have a shell. 00:01:17
Lots of reptiles walk and run. 00:01:21
Some slither and others can swim. 00:01:24
Okay, perfect. So let's see a little bit more. 00:01:29
Now, here we have, as we say, reptiles spend most of their time on land, okay? 00:01:33
But some spend part of their time in water, so they can live on land and in water, ok? 00:01:38
Let's talk about the reproduction. 00:01:44
How do they reproduce? 00:01:46
Most reptiles are oviparous, ok? 00:01:47
They lay their eggs on land. 00:01:50
Baby reptiles look like adult reptiles when they hatch, ok? 00:01:52
Los bebés reptiles son iguales que los adultos cuando justo rompen el huevo, ok? 00:01:56
Tienen la misma forma. 00:02:03
Nutrition. 00:02:05
What do they eat? 00:02:06
Most reptiles are carnivores, some are omnivores and eat plants, insects and small animals 00:02:07
Respiration 00:02:14
How do they breathe? 00:02:16
They breathe with their lungs, like the birds and the mammals 00:02:17
Physical characteristics 00:02:21
Most reptiles have four limbs, but some have no limbs 00:02:24
Tienen cuatro extremidades y algunos no tienen ninguna extremidad 00:02:29
They have scales which cover and protect their body and some reptiles have a shell. 00:02:33
Algunos tienen escamas que cubren y protegen su cuerpo y otros tienen un caparazón. 00:02:40
Lots of reptiles walk and run, some slither and others can swim. 00:02:47
Muchos reptiles se desplazan corriendo, caminando y algunos se deslizan y otros pueden nadar. 00:02:52
Let's see this. 00:03:01
we have here. These are the scales, okay? Here we have the scales, okay? These are another type of 00:03:02
scales. And here we have scales too, okay? These are the scales of the snake, the scales of the 00:03:09
lizard, and the scales of the turtle, okay? So, this is the vertebrates and the reptiles. Now, 00:03:16
Let's go for the fish, okay? 00:03:24
Now, let's start again. 00:03:29
Finger ready. 00:03:31
One, two, three. 00:03:32
Here we go. 00:03:35
Fish are the biggest group of vertebrates. 00:03:39
They live in fresh water or in the sea. 00:03:43
Reproduction. 00:03:48
Most fish are oviparous. 00:03:50
Some fish keep their eggs in their mouths until they hatch. 00:03:52
Nutrition 00:03:58
Fish can be carnivores, herbivores or omnivores. 00:03:59
Respiration 00:04:07
They breathe with their gills. 00:04:08
Physical characteristics 00:04:12
They have fins and a tail which help them move around. 00:04:14
their skin is covered in scales which protect their body okay let's continue on how to freeze 00:04:19
breathe one finger ready one two three how to fish breathe all animals need oxygen to live so how to 00:04:33
do fish get their oxygen? Water passes through the gills, which act like filters and separate 00:04:48
the dissolved oxygen from the water. The oxygen is then absorbed inside the gills and goes 00:04:58
into the blood. This is why fish cannot breathe outside of water. 00:05:06
Ok, perfect. So, let's see a little bit more. 00:05:14
Now, here we go. 00:05:18
So, fish are the biggest group of vertebrates and they live in fresh water or in the sea. 00:05:19
Pueden vivir en agua dulce o en agua salada, en el mar, en el océano. 00:05:24
How do they reproduce? 00:05:29
Most fish are oviparous. 00:05:30
Some fish keep their eggs in their mouths until they hatch. 00:05:32
Algunos los mantienen en la boca hasta que eclosionan. 00:05:37
eclosionan, ¿vale? Nutrition, what do they eat? Feast can be carnivores, herbivores or omnivores. 00:05:41
Respiration, how do they breathe? They breathe with their gills. This is different, ¿ok? This is not 00:05:50
with lungs, no respiran con pulmones, a través de los pulmones, sino a través de las branquias, ¿vale? 00:05:56
We are going to study later. Physical characteristics, they have fins and a tail which 00:06:02
help them move around, ¿ok? Tienen aletas y cola 00:06:09
que les ayuda a moverse, a desplazarse. And their skin is covering 00:06:13
the scales which protect their body, ¿vale? También está cubierto su 00:06:17
cuerpo de escalas, como los de escamas, como los reptiles, 00:06:21
the reptiles. Ok, now, how do fish breathe? Because 00:06:25
if they don't breathe with lungs, how do they breathe? 00:06:29
Ok, so look. This is the fish, ¿ya? It's an example of a fish. 00:06:33
And we have the scales. These are the fins, ok? And the tail. And here we have the gills. Ok, so, they need oxygen. And how do they get their oxygen? Well, so water, the water passes through the gills. El agua pasa por aquí. The water passes through the gills. 00:06:37
And here there is a filter that separates the oxygen from the water, ¿vale? 00:06:56
Separa el oxígeno del agua. 00:07:04
The oxygen is then absorbed inside the gill and goes into the blood, ¿ok? 00:07:06
El oxígeno es absorbido por las branquias, ¿vale? 00:07:13
Y entonces coge y reparte todo el oxígeno por la sangre del pez, ¿vale? 00:07:16
This is why fish cannot breathe outside of water 00:07:26
They cannot breathe outside of water 00:07:29
No pueden respirar fuera del agua 00:07:31
Porque necesitan ese agua para tomar el oxígeno 00:07:33
Then they absorb the oxygen from the water inside the gills 00:07:36
Ok? 00:07:40
Yes? 00:07:41
Do we understand? 00:07:42
Perfect 00:07:43
So what you have to do now after this 00:07:44
You can go to page 15 00:07:47
Ok? 00:07:50
And you can do activity number 3 00:07:51
and activity number four from the activity book, okay? So you have to complete the test about the 00:07:54
fish and solve the crossword. You can read very carefully. If you need, you can look at the pupil's 00:08:01
book and you can complete the crossword. When you finish with the exercise number three, you go to 00:08:07
exercise number four. That is, read the questions and take the correct answers. There is only one 00:08:14
answer. How do reptiles reproduce? A or B. How do reptiles breathe? A or B. What do reptiles eat? 00:08:19
A or B. How many limbs do reptiles have? A or B. What protects most reptiles' bodies? A or B. 00:08:28
And how do reptiles move? A or B. Okay, so this is the activities for Thursday, okay, for natural. 00:08:38
Thank you. 00:08:49
Subido por:
Laura De La C.
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
66
Fecha:
20 de enero de 2021 - 18:11
Visibilidad:
Clave
Centro:
CP INF-PRI DAOIZ Y VELARDE
Duración:
08′ 50″
Relación de aspecto:
1.85:1
Resolución:
1376x744 píxeles
Tamaño:
332.08 MBytes

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