Problems
Ip Dip
Stage: 1 and 2 Challenge Level: 
"Ip dip sky blue! Who's 'it'? It's you!" Where would you position yourself so that you are 'it' if there are two players? Three players ...?
Triple Cubes
Stage: 1 and 2 Challenge Level:
This challenge involves eight three-cube models made from interlocking cubes. Investigate different ways of putting the models together then compare your constructions.
Follow the Numbers
Stage: 2 Challenge Level:
What happens when you add the digits of a number then multiply the result by 2 and you keep doing this? You could try for different numbers and different rules.
Gran, How Old Are You?
Stage: 2 Challenge Level:
When Charlie asked his grandmother how old she is, he didn't get a straightforward reply! Can you work out how old she is?
Next Size Up
Stage: 2 Challenge Level:
The challenge for you is to make a string of six (or more!) graded cubes.
Featured Solution
I Like ...
We had some good solutions to this problem. I wonder whether there are any other possibilities?
Articles & Games
Welcoming Your New Class
What might your first lesson with a new class look like? In this article, Cherri Moseley makes some suggestions for primary teachers.
Guess the Houses
This task depends on learners sharing reasoning, listening to opinions, reflecting and pulling ideas together.
NRICH is part of the family of activities in the Millennium Mathematics Project.