2 out of 3
Place the digits 1 to 9 into the circles so that each side of the triangle adds to the same total.
2 out of 3
Three beads are threaded on a circular wire and are coloured either red or blue. Can you find all four different combinations?
2 out of 3
Can you draw a continuous line through 16 numbers on this grid so that the total of the numbers you pass through is as high as possible?
2 out of 3
Find out why these matrices are magic. Can you work out how they were made? Can you make your own Magic Matrix?
2 out of 3
In this game for two players, take it in turns to shade one petal, or two petals next to each other. Is it better to go first or second?
2 out of 3
Watch this animation. What do you notice? What happens when you try more or fewer cubes in a bundle?
3 out of 3
Investigate all the different squares you can make on this 5 by 5 grid by making your starting side go from the bottom left hand point. Can you find out the areas of all these squares?
3 out of 3
3 out of 3
Place the numbers 1 to 10 in the circles so that each number is the difference between the two numbers just below it.
3 out of 3
Follow the directions for circling numbers in the matrix. Add all the circled numbers together. Note your answer. Try again with a different starting number. What do you notice?
