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Hi everyone! How are you? I suppose you are fine. I really want to see you at school on Monday.

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Let's see, today we are going to revise the page 46 about animal characteristics

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and also we are going to introduce contents of page 47 that is about how do we classify

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animals. Let's see what kind of information do we have on page 46. What

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do animals have in common? Let's read. Symmetry. Most animals have symmetrical

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bodies. This means that the body parts are the same on both sides of the animal.

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What does it mean? It means that if we draw a line in the middle of the lion

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both parts of the body, left and right, are equal. They have the same elements.

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One ear, one ear, one eye, one eye, some whiskers, some whiskers, and a lot of hair in both

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sides. Let's draw a line also in the butterfly. Let's see. If we divide the

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butterfly in two sides, they are equals. Each wind is exactly the same as the

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other. Orange, orange, dark blue, dark blue, light blue, light blue. What is important

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about this little paragraph? Most animals have symmetrical bodies. This is the main

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idea that body organization most animals have organs and systems these help them

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to perform the vital function do you remember that when many organs work

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together to carry out a function we call it systems and do you remember the name

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of the three vital functions? I suppose yes. There are three vital functions.

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Nutrition, interaction and reproduction. Let's read about interaction. All animals

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interact with their environment using the sense organs connected to the nervous

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system. The sense organs are located in the body. Some examples of the sense

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organs are the ears, the eyes, and also our nose and our mouth with the tongue.

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Let's continue. This is all the information about this page. It's very

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simple. Let's continue working with the other page. In this page we are going to

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speak about how do we classify animals. Let's read. We can classify animals into

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vertebrates and invertebrates. What are vertebrates? Let's discover it.

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Vertebrates have backbone. Do you know what is the backbone? Is a group of bones

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we have in our back. Let's find the backbone in these animals. For example

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the fish. This is the backbone of the fish, the spine. Also in a lizard. This is the spine

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and the backbone of the lizard. They also have an internal skeleton made of hard bones.

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Their bodies have a head, a trunk and extremities. Let's find the head. We are going to choose

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another color, green color for the head. This is the head of the fish. This is the head

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of the lizard. Let's see where is the trunk. The trunk is the center of the animals, in

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this case this is the whole trunk of the fish, the body, and this is the trunk, this part

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with no extremities and now let's look for the extremities in yellow very good

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color in the case of the fish the extremities are adapted to swim very

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fast and when they are called fins in the case of the lizard we have legs and

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a long thing that help the lizard to run and climb very fast there are five

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groups of vertebrates, fish, amphibians, reptiles, birds and mammals.

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We are going to speak deeply about these groups later.

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Now let's read about the invertebrates.

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What is the most important thing about invertebrates?

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That do not have a backbone or an internal bone skeleton.

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Some vertebrates, not all, have a hard shell or exoskeleton to protect their body organs,

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and most invertebrates are oviparous. For example, here we have a snail with a hard

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shell to protect the body organs. An example of an exoskeleton, it could be a ladybug,

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for example, of many insects, like a grasshopper. And this is all the information about these two

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pages. I hope you have understood everything about these two pages. Let's underline some

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important words. Hard seal, for example, in invertebrates, and also exoskeleton. And most

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invertebrates are oviparous. Let's underline some important information

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that vertebrates have a backbone, their bodies have head, trunk and extremities.

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And this is all about the most common animal characteristic and also about how

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do we classify animals between vertebrates and invertebrates. Let's do

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an activity all together. Choose the correct option. Most animals have symmetrical bodies.

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This means that the body parts are the same on both sides of the animal. Which animal

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have symmetrical bodies? Choose the correct answer. I'll let you 5 seconds to choose.

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What animal do you think are symmetrical? My options are the butterfly and the lion.

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checks they are correct fantastic and this is all about these two pages if you

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have any doubt you can write me in the chat and I hope to see you soon on

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Monday