My two digit number is special because adding the sum of its digits to the product of its digits gives me my original number. What could my number be?
Can you find an efficent way to mix paints in any ratio?
Can you find and prove the relationship between the area of a trapezium and the area of a triangle constructed within it?
Join pentagons together edge to edge. Will they form a ring?
I've made some cubes and some cubes with holes in. This challenge invites you to explore the difference in the number of small cubes I've used. Can you see any patterns?
I took the graph y=4x+7 and performed four transformations. Can you find the order in which I could have carried out the transformations?
Charlie likes tablecloths that use as many colours as possible, but insists that his tablecloths have some symmetry. Can you work out how many colours he needs for different tablecloth designs?
If you can copy a network without lifting your pen off the paper and without drawing any line twice, then it is traversable. Decide which of these diagrams are traversable.
Use the animation to help you work out how many lines are needed to draw mystic roses of different sizes.
Charlie and Alison have been drawing patterns on coordinate grids. Can you picture where the patterns lead?
