Frances and Rishi were given a bag of lollies. They shared them out evenly and had one left over. How many lollies could there have been in the bag?

Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.

A group of children are discussing the height of a tall tree. How would you go about finding out its height?

Why does the tower look a different size in each of these pictures?

On my calculator I divided one whole number by another whole number and got the answer 3.125. If the numbers are both under 50, what are they?

Nine squares with side lengths 1, 4, 7, 8, 9, 10, 14, 15, and 18 cm can be fitted together to form a rectangle. What are the dimensions of the rectangle?

Watch our videos of multiplication methods that you may not have met before. Can you make sense of them?

In this article, Malcolm Swan describes a teaching approach designed to improve the quality of students' reasoning.

In this article for teachers, Bernard gives some background about the theme for November 2011's primary activities, which focus on analysing different approaches.