Working systematically

  • Stop the Clock
    problem
    Favourite

    Stop the Clock

    Age
    5 to 7
    Challenge level
    filled star filled star filled star

    This is a game for two players. Can you find out how to be the first to get to 12 o'clock?

  • Stairs
    problem

    Stairs

    Age
    5 to 11
    Challenge level
    filled star empty star empty star
    This challenge is to design different step arrangements, which must go along a distance of 6 on the steps and must end up at 6 high.
  • problem
    Favourite

    Four Triangles Puzzle

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    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?

  • A smiling emoji and a sad emoji.
    problem

    Whose Face?

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    These are the faces of Will, Lil, Bill, Phil and Jill. Use the clues to work out which name goes with each face.

  • Magnifying glass
    problem
    Favourite

    Number Detective

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    Follow the clues to find the mystery number.

  • Break it up!
    problem
    Favourite

    Break It Up!

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    In how many different ways can you break up a stick of seven interlocking cubes? Now try with a stick of eight cubes and a stick of six cubes. What do you notice?

  • Growing Garlic
    problem
    Favourite

    Growing Garlic

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?

  • Today's date - 01/06/2009
    problem

    Today's Date - 01/06/2009

    Age
    5 to 11
    Challenge level
    filled star empty star empty star
    What do you notice about the date 03.06.09? Or 08.01.09? This challenge invites you to investigate some interesting dates yourself.
  • HexPentas
    problem

    HexPentas

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    How many different ways can you find of fitting five hexagons together? How will you know you have found all the ways?

  • Jig Shapes
    problem
    Favourite

    Jig Shapes

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    Can you each work out what shape you have part of on your card? What will the rest of it look like?