This is part of our Secondary Curriculum collection of favourite rich tasks arranged by topic.
In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?
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?
Is there a temperature at which Celsius and Fahrenheit readings are the same?
There are lots of different methods to find out what the shapes are worth - how many can you find?
Four friends must cross a bridge. How can they all cross it in just 17 minutes?
You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.
