4 .1
• How can you have fun at the museum?
• Why is the Mona Lisa famous?
• Why do people yodel?
• What is apsara dance?
• Who was Nicolaus Copernicus?
• Who were the first humans on the Moon?
• How big are the planets?
• What do astronauts eat in space?
1
Babies have about 300 bones, but adults have about 206 bones.
Unit 2
An eyelash falls out after 3-5 months and a new one grows back.
3
The human brain is the second heaviest organ inside the body. It weighs about 1.3-1.4 kg.
Animal Stretches Unit 4
Just like humans, animals need to move and stretch their bodies for healthy muscles and joints.
How
This is a class at school.
Kids are learning about bones. The teacher is the students’ questions.
A Listen and repeat the words. 01
B Choose and write the correct words.
Every day, we do many different activities. So we need to move our body all the time. Thankfully, we have bones and muscles. Bones are hard and stiff, and they give our body shape. Without bones, our body will be like jelly. So we will not be able to stand up or sit down. Bones also protect important organs like our heart and lungs.
Let’s Discover
What do our bones and muscles do?
Muscles are soft, and they cover our bones. All muscles and bones are joined together. And they work together to move our body. Now, try walking. Your bones are keeping your body up. And your leg muscles are
Can you imagine your body without bones and
A Choose the correct answers.
1 What is the passage mainly about?
a where our heart and lungs are
b what our bones and muscles do
c why we need to move our body
2 Bones are , and they give our body shape. a stiff and hard b like jelly c soft
3 What covers our bones?
jelly b organs
B Circle True or False.
A Complete the chart.
What
Bones Muscles
They give our body ❶ . They ❷ our organs. They cover our ❸ .
Bones and Muscles
They are ❹ together. They work together to ❺ our body.
B Complete the sentences.
1 We need bones and muscles to around.
2 All and muscles are joined. They together to move our body.
3 When walking, our bones keep our up and our leg move our leg bones forward. bones joined move protect shape
body bones move muscles work