This problem is designed to help children to learn, and to use, the two and three times tables.
With just some simple arithmetic, Julia introduces us to a basic mathematical model of the spread of infectious diseases, and then introduces us to R, one of the most important numbers in disease modelling.
This article offers you practical ways to investigate aspects of your classroom culture.
A triomino is a flat L shape made from 3 square tiles. A chess board is marked into squares the same size as the tiles and just one square, anywhere on the board, is coloured red. Can you cover the board with trionimoes so that only the square is exposed?
Read about the problem that tickled Euler's curiosity and led to a new branch of mathematics!
On the graph there are 28 marked points. These points all mark the vertices (corners) of eight hidden squares. Can you find the eight hidden squares?
Position the lines so that they are perpendicular to each other. What can you say about the equations of perpendicular lines?
