Resource management

What you'll learn

1. 1

   Imagine you're in charge of a village with 50 people. You have to decide how to use your water, food, and wood so nobody runs out.

2. 2

   What does 'resource management' mean?

3. 3

   You have 100 litres of water per day for your village. Each person needs 2 litres. Drag the slider to see how much water is used by different numbers of people.

4. 4

   Your village has 50 people. Each person needs 2 litres of water and 1 kg of food per day. You have 120 litres of water and 60 kg of food. Will you run out of anything?

5. 5

   Now it's your turn. Your village has 30 people. Each needs 3 litres of water per day. You have 100 litres. Will you have enough? Move the marker to show the amount needed.

6. 6

   If 30 people each need 3 litres of water, how much water do they need in total?

7. 7

   You have 100 litres of water. The village needs 90 litres. How much water is left over?