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A game for 2 or more people, based on the traditional card game Rummy.
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Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
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A cinema has 100 seats. How can ticket sales make £100 for these different combinations of ticket prices?
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How many different symmetrical shapes can you make by shading triangles or squares?
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What do you notice about the sum of two identical triangular numbers?
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Square numbers can be represented as the sum of consecutive odd numbers. What is the sum of 1 + 3 + ..... + 149 + 151 + 153?
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It's easy to work out the areas of most squares that we meet, but what if they were tilted?
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Draw some isosceles triangles with an area of $9cm^2$ and a vertex at (20,20). If all the vertices must have whole number coordinates, how many is it possible to draw?
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Discs are flipped in the air. You win if all the faces show the same colour. What is the probability of winning?
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Experiment with the interactivity of "rolling" regular polygons, and explore how the different positions of the dot affects the distance it travels at each stage.
