Being collaborative

  • What's it worth?
    problem
    Favourite

    What's It Worth?

    Age
    11 to 16
    Challenge level
    filled star empty star empty star

    There are lots of different methods to find out what the shapes are worth - how many can you find?

  • Square It
    problem
    Favourite

    Square It

    Age
    11 to 16
    Challenge level
    filled star empty star empty star

    Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

  • Vector Racer
    game
    Favourite

    Vector Racer

    Age
    11 to 16
    Challenge level
    filled star empty star empty star

    The classic vector racing game.

  • Multiple Surprises
    problem
    Favourite

    Multiple Surprises

    Age
    11 to 16
    Challenge level
    filled star empty star empty star

    Sequences of multiples keep cropping up...

  • Countdown fractions
    problem
    Favourite

    Countdown Fractions

    Age
    11 to 16
    Challenge level
    filled star empty star empty star

    Here is a chance to play a fractions version of the classic Countdown Game.

  • Same length
    problem
    Favourite

    Same Length

    Age
    11 to 16
    Challenge level
    filled star filled star empty star

    Construct two equilateral triangles on a straight line. There are two lengths that look the same - can you prove it?

  • Product Sudoku
    problem
    Favourite

    Product Sudoku

    Age
    11 to 16
    Challenge level
    filled star filled star empty star

    The clues for this Sudoku are the product of the numbers in adjacent squares.

  • A Connect Four game with red and yellow counters placed.
    problem
    Favourite

    Connect Three

    Age
    11 to 16
    Challenge level
    filled star filled star empty star

    In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?

  • Rhombus It
    problem
    Favourite

    Rhombus It

    Age
    11 to 16
    Challenge level
    filled star filled star empty star

    Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a rhombus.

  • Ben's Game
    problem
    Favourite

    Ben's Game

    Age
    11 to 16
    Challenge level
    filled star filled star filled star

    Ben, Jack and Emma passed counters to each other and ended with the same number of counters. How many did they start with?