Absorption, liver and heart
Answers are for parents and teachers.
1
Find your pulse for 30 seconds. Double the number and write the beats per minute.
Answers differ; 70 to 100 is usual for a rested child.
2
Draw a smooth line and a wavy line to explain villi to someone at home.
The wavy line has more surface.
3
Make a flow chart: heart, lungs, heart, body, back to the heart.
The heart pumps blood to the lungs and to the body.
4
Name three jobs of the liver.
Stores nutrients, changes nutrients, breaks down harmful substances, makes bile.
5
Why is it wrong to say blood is blue inside the body?
Blood is red; veins can look blue through skin.