problem
Favourite
Four Triangles Puzzle
Age
5 to 11
Challenge level
Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?
problem
Favourite
Zios and Zepts
Age
7 to 11
Challenge level
On the planet Vuv there are two sorts of creatures. The Zios have 3 legs and the Zepts have 7 legs. The great planetary explorer Nico counted 52 legs. How many Zios and how many Zepts were there?
problem
Favourite
Nine-Pin Triangles
Age
7 to 11
Challenge level
How many different triangles can you make on a circular pegboard that has nine pegs?
problem
Favourite
Torn Shapes
Age
7 to 11
Challenge level
These rectangles have been torn. How many squares did each one have inside it before it was ripped?
problem
Favourite
Coordinate Challenge
Age
7 to 11
Challenge level
Use the clues about the symmetrical properties of these letters to place them on the grid.
problem
Favourite
Round the Dice Decimals 1
Age
7 to 11
Challenge level
Use two dice to generate two numbers with one decimal place. What happens when you round these numbers to the nearest whole number?
problem
Favourite
Shapes on the Playground
Age
7 to 11
Challenge level
Sally and Ben were drawing shapes in chalk on the school playground. Can you work out what shapes each of them drew using the clues?
problem
Favourite
Fractions in a Box
Age
7 to 11
Challenge level
The discs for this game are kept in a flat square box with a square hole for each. Use the information to find out how many discs of each colour there are in the box.
problem
Favourite
Light the Lights Again
Age
7 to 11
Challenge level
Each light in this interactivity turns on according to a rule. What happens when you enter different numbers? Can you find the smallest number that lights up all four lights?
problem
Favourite
Symmetry Challenge
Age
7 to 11
Challenge level
How many symmetric designs can you make on this grid? Can you find them all?