Saving water: an irrigation challenge
Answers are for parents and teachers.
1
Draw a pie or bar to show 3 parts fresh water and 97 parts salt water out of 100.
3 parts fresh, 97 parts salt.
2
List three ways to stop irrigation wasting water.
Repair leaks, water in cool hours, use drip or a moisture sensor.
3
Draw six boxes with arrows for the design process.
Ask, imagine, plan, build, test, improve.
4
A test used 300 ml of water. 200 ml stayed in the pot. How much ran off or was lost?
100 ml.
5
Ask a grown-up how water is used and saved at your home.
Answers differ.