Making and testing hypotheses

problem

Do you brush your teeth every day?

Age

14 to 18

Challenge level

How can we find out answers to questions like this if people often lie?
list
Statistics - maths of real life

Age

14 to 18

Challenge level

This pilot collection of resources is designed to introduce key statistical ideas and help students to deepen their understanding.
problem
Favourite

Perception versus reality

Age

14 to 18

Challenge level

Infographics are a powerful way of communicating statistical information. Can you come up with your own?
problem
Favourite

Statistical shorts

Age

11 to 16

Challenge level

Can you decide whether these short statistical statements are always, sometimes or never true?
problem
Favourite

Reaction timer

Age

11 to 14

Challenge level

This problem offers you two ways to test reactions - use them to investigate your ideas about speeds of reaction.
problem
Favourite

In the bag

Age

11 to 14

Challenge level

Can you guess the colours of the 10 marbles in the bag? Can you develop an effective strategy for reaching 1000 points in the least number of rounds?
page
Two classes working on Counting cogs

Two video clips of classes organised into groups to work on Counting Cogs.
article
Understanding hypotheses

This article explores the process of making and testing hypotheses.
interactivity
Introducing NRICH TWILGO

Age

5 to 18

Challenge level

We're excited about this new program for drawing beautiful mathematical designs. Can you work out how we made our first few pictures and, even better, share your most elegant solutions with us?
interactivity
See the light

Age

7 to 14

Challenge level

Work out how to light up the single light. What's the rule?