Activity 31: Ratio and proportion
Synopsis: This ITP two on-screen containers, holding different coloured liquids, to model ratio and proportion. Each container has its own tap which can be set to deliver liquid in units of 1 to 10. In the example below the left-hand tap is set to 5 and the right-hand tap to 3 to deliver a ratio of 5:3.
A main tap can be set to deliver multiples of the amount on the left and right-hand taps. In the example below it is set to 2 so the left-hand container will receive 10 units and the right-hand container will receive 6 units.