Page 6 - 新思维科学学生用书4 样章
P. 6
How to use this book
Questions to help you think What did you learn about skeletons?
What did you find difficult?
about how you learn What did you find fun to learn?
Look what I can do!
This is what you have I can describe the main functions of the skeleton as protecting organs,
allowing movement, giving shape to the body and supporting organs
learned in the topic during activity.
I can understand that we grow because our skeleton grows.
I can measure the length of bones.
I can say why it is better to measure in standard units.
I can record data in a table.
At the end of each unit, there Project: Earthworm farming
is a project for you to carry out, Earthworms are invertebrates. Earthworms live in the earth or soil.
People all over the world keep earthworm farms. They grow the
using what you have learned. earthworms in containers that are dark and moist inside, like the soil.
The farmers feed the worms with materials such as vegetable peels
You might make something or and garden waste. Earthworms leave droppings called ‘castings’. The
earthworms’ castings form a substance called worm compost. The worm
solve a problem compost contain substances that help plants to grow better. The worm
farmers sell the worm compost to gardeners and other farmers.
Activity
Work in pairs.
Speak to someone in your local area who farms earthworms.
These are some questions you could ask:
Questions that cover what Check your progress
1 Write the word that describes each of the following:
you have learned in the unit. a A frame made of bone that supports our body.
If you can answer these, you b The bones of the head.
Something that shows us how another thing looks or works.
c
are ready to move onto the d The parts inside our bodies.
e Animals with no backbone.
next unit f The parts of the body that allow our bones to move.
g The hard skin or shell on the outside of the body of some animals.
h An injection that prevents disease.
2 Look at the drawing and answer the questions.
a Write down the number of the muscle
that gets shorter to bend the arm.
b Choose the correct words in the
sentences to explain how the muscle 1 1 1
makes the arm bend upwards.
The muscle contracts / relaxes. The 2 2 2
muscle gets longer / shorter and
pushes / pulls on the arm bone.
5
