Welcome to the new site - September 2012, Stage 4&5

Holidays over and back to school.... Welcome to our new site! Please update your bookmarks as you have reached the old monthly index page that will soon cease to exist.

Problems

problem icon

Charlie's Delightful Machine

Stage: 3 and 4 Challenge Level: Challenge Level:1

Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?

problem icon

A Little Light Thinking

Stage: 4 Challenge Level: Challenge Level:1

Here is a machine with four coloured lights. Can you make two lights switch on at once? Three lights? All four lights?

problem icon

Summing Geometric Progressions

Stage: 4 and 5 Challenge Level: Challenge Level:1

Watch the video to see how to sum the sequence. Can you adapt the method to sum other sequences?

problem icon

Factors and Multiples Graphs

Stage: 4 and 5 Challenge Level: Challenge Level:1

Explore creating 'factors and multiples' graphs such that no lines joining the numbers cross

problem icon

Fix Me or Crush Me

Stage: 5 Challenge Level: Challenge Level:2 Challenge Level:2

Can you make matrices which will fix one lucky vector and crush another to zero?

problem icon

Fundamental Particles Collection

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

A collection of problems related to the mathematics of fundamental physics.

The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities can be found here.
Copyright © 1997 - 2016. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project.