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problem
Domino Join Up
5 to 7
Can you arrange fifteen dominoes so that all the touching domino pieces add to 6 and the ends join up? Can you make all the joins add to 7?
problem
Curvy Equation
16 to 18
This problem asks you to use your curve sketching knowledge to find all the solutions to an equation.
problem
Cuboid-In-A-Box
7 to 11
What is the smallest cuboid that you can put in this box so that
you cannot fit another that's the same into it?
problem
You Never Get a Six
7 to 11
Charlie thinks that a six comes up less often than the other numbers on the dice. Have a look at the results of the test his class did to see if he was right.
problem
Inside Seven Squares
7 to 11
What is the total area of the four outside triangles which are outlined in red in this arrangement of squares inside each other?
problem
Favourite
Giants
16 to 18
Which is the bigger, 9^10 or 10^9 ? Which is the bigger, 99^100 or 100^99 ?
problem
A Flying Holiday
7 to 11
Follow the journey taken by this bird and let us know for how long and in what direction it must fly to return to its starting point.