Mathematics has always been a powerful tool for studying, measuring and calculating the movements of the planets, and this article gives several examples.

Design and test a paper helicopter. What is the best design?

Examine these estimates. Do they sound about right?

Making a scale model of the solar system

My recipe is for 12 cakes - how do I change it if I want to make a different number of cakes?

This article for teachers recounts the history of measurement, encouraging it to be used as a spring board for cross-curricular activity.

A circle with the radius of 2.2 centimetres is drawn touching the sides of a square. What area of the square is NOT covered by the circle?

At the time of writing the hour and minute hands of my clock are at right angles. How long will it be before they are at right angles again?

Measure problems for inquiring primary learners.

Measure problems for primary learners to work on with others.

Not everybody agreed that the Third Millennium actually began on January 1st 2000. Find out why by reading this brief article.

Measure problems at primary level that may require determination.

Measure problems at primary level that require careful consideration.

My measurements have got all jumbled up! Swap them around and see if you can find a combination where every measurement is valid.