Conjecturing and generalising

  • Jam
    game

    Jam

    Age
    14 to 16
    Challenge level
    3 out of 3

    To avoid losing think of another very well known game where the patterns of play are similar.

  • Polycircles
    problem

    Polycircles

    Age
    14 to 16
    Challenge level
    3 out of 3

    Show that for any triangle it is always possible to construct 3 touching circles with centres at the vertices. Is it possible to construct touching circles centred at the vertices of any polygon?

  • Hypotenuse Lattice points
    problem

    Hypotenuse Lattice Points

    Age
    14 to 16
    Challenge level
    3 out of 3

    The triangle OMN has vertices on the axes with whole number co-ordinates. How many points with whole number coordinates are there on the hypotenuse MN?

  • AMGM
    problem

    AMGM

    Age
    14 to 16
    Challenge level
    3 out of 3

    Can you use the diagram to prove the AM-GM inequality?

  • A Tilted Square
    problem

    A Tilted Square

    Age
    14 to 16
    Challenge level
    3 out of 3

    The opposite vertices of a square have coordinates (a,b) and (c,d). What are the coordinates of the other vertices?

  • Small tomato seedlings in pink pots.
    problem

    Super Computer

    Age
    14 to 16
    Challenge level
    3 out of 3

    What is the units digit of the given expression?

  • Can you traverse it?
    problem

    Can You Traverse It?

    Age
    14 to 18
    Challenge level
    1 out of 3

    How can you decide if a graph is traversable?

  • Difference Dynamics
    problem

    Difference Dynamics

    Age
    14 to 18
    Challenge level
    1 out of 3

    Take three whole numbers. The differences between them give you three new numbers. Find the differences between the new numbers and keep repeating this. What happens?

  • All tangled up
    problem

    All Tangled Up

    Age
    14 to 18
    Challenge level
    2 out of 3

    Can you tangle yourself up and reach any fraction?