In Proportion

In Proportion

These problems use contexts such as scaling a recipe, or diluting lemonade or chemical solutions, to show how proportional reasoning is used across STEM subjects.

Tray Bake 

Age 11 to 14 Challenge Level:
My recipe is for 12 cakes - how do I change it if I want to make a different number of cakes?

Toad in the Hole 

Age 11 to 14 Challenge Level:
Is it cheaper to cook a meal from scratch or to buy a ready meal? What difference does the number of people you're cooking for make?

Mixing Lemonade 

Age 11 to 14 Challenge Level:
Can you work out which drink has the stronger flavour?

Investigating the Dilution Series 

Age 14 to 16 Challenge Level:
Which dilutions can you make using only 10ml pipettes?