Equations and Formulae: Age 11-14

This is part of our Secondary Curriculum collection of favourite rich tasks arranged by topic.

Fruity Totals

Age 7 to 16 Challenge Level:

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?

Your Number Was...live

Age 11 to 14 Challenge Level:

Think of a number and follow my instructions. Tell me your answer, and I'll tell you what you started with! Can you explain how I know?


Age 11 to 14 Challenge Level:

Is there a temperature at which Celsius and Fahrenheit readings are the same?

Equations and Formulae - Short Problems

Age 11 to 16

A collection of short problems on equations and formulae.

What's it Worth?

Age 11 to 16 Challenge Level:

There are lots of different methods to find out what the shapes are worth - how many can you find?

You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.