article Train Spotters' Paradise Dave Hewitt suggests that there might be more to mathematics than looking at numerical results, finding patterns and generalising.
problem Magic Letters Age 11 to 14 Challenge level Charlie has made a Magic V. Can you use his example to make some more? And how about Magic Ls, Ns and Ws?
problem Steps to the Podium Age 7 to 14 Challenge level It starts quite simple but great opportunities for number discoveries and patterns!
problem polygonals Age 7 to 11 Challenge level Polygonal numbers are those that are arranged in shapes as they enlarge. Explore the polygonal numbers drawn here.
problem Summing Consecutive Numbers Age 11 to 14 Challenge level 15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?
problem Poly Plug Pattern Age 5 to 7 Challenge level Create a pattern on the small grid. How could you extend your pattern on the larger grid?
problem Attractive Tablecloths Age 14 to 16 Challenge level 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?
problem Odds, Evens and More Evens Age 11 to 14 Challenge level Alison, Bernard and Charlie have been exploring sequences of odd and even numbers, which raise some intriguing questions...
problem Seven Squares Age 11 to 14 Challenge level Watch these videos to see how Phoebe, Alice and Luke chose to draw 7 squares. How would they draw 100?
problem What numbers can we make? Age 11 to 14 Challenge level Imagine we have four bags containing a large number of 1s, 4s, 7s and 10s. What numbers can we make?