Explore when it is possible to construct a circle which just touches all four sides of a quadrilateral.
10 graphs of experimental data are given. Can you use a spreadsheet to find algebraic graphs which match them closely, and thus discover the formulae most likely to govern the underlying processes?
Each clue in this Sudoku is the product of the two numbers in adjacent cells.
Powers of numbers behave in surprising ways. Take a look at some of these and try to explain why they are true.
How will you complete these interactive Venn diagrams?
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?
Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?
If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?
