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An article detailing the use of NRICH on the University of Cambridge Secondary Mathematics PGCE course, from the perspective of a trainee.
A short guide on how to choose NRICH activities.
Sometimes, you may want to put your own spin on an NRICH problem. This article details the experiences of a PGCE student when they tried just that.
Some of our experiences of discovering and using triangle numbers in a range of contexts.
One of our and Libby's favourite puzzles and some ways to present the problem to a class.
A collection of problems we have used throughout the past year which are NRICH worthy but are not currently on the website.
Libby Jared helped to set up NRICH and this is one of her favourite problems. It's a problem suitable for a wide age range and best tackled practically.
Can you use small coloured cubes to make a 3 by 3 by 3 cube so that each face of the bigger cube contains one of each colour?
Try entering different sets of numbers in the number pyramids. How does the total at the top change?
Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?
It's easy to work out the areas of most squares that we meet, but what if they were tilted?
Imagine a large cube made from small red cubes being dropped into a pot of yellow paint. How many of the small cubes will have yellow paint on their faces?
Using your knowledge of the properties of numbers, can you fill all the squares on the board?
What's the largest volume of box you can make from a square of paper?
How many moves does it take to swap over some red and blue frogs? Do you have a method?
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
A game in which players take it in turns to choose a number. Can you block your opponent?
Collect as many diamonds as you can by drawing three straight lines.