Being curious

  • How old am I?
    problem

    How old am I?

    Age
    14 to 16
    Challenge level
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    In 15 years' time my age will be the square of my age 15 years ago. Can you work out my age, and when I had other special birthdays?

  • Triangle midpoints
    problem

    Triangle midpoints

    Age
    14 to 16
    Challenge level
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    You are only given the three midpoints of the sides of a triangle. How can you construct the original triangle?

  • Chain of Changes
    problem

    Chain of changes

    Age
    5 to 7
    Challenge level
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    Arrange the shapes in a line so that you change either colour or shape in the next piece along. Can you find several ways to start with a blue triangle and end with a red circle?

  • Magnifying glass
    problem

    Number detective

    Age
    5 to 11
    Challenge level
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    Follow the clues to find the mystery number.

  • problem

    Buzzy bee

    Age
    5 to 7
    Challenge level
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    Buzzy Bee was building a honeycomb. She decorated the honeycomb with a pattern using numbers. Can you discover Buzzy's pattern and fill in the empty cells for her?

  • Colouring Triangles
    problem

    Colouring triangles

    Age
    5 to 7
    Challenge level
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    Explore ways of colouring this set of triangles. Can you make symmetrical patterns?

  • Three Squares
    problem

    Three squares

    Age
    5 to 11
    Challenge level
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    What is the greatest number of squares you can make by overlapping three squares?

  • Let's Investigate Triangles
    problem

    Let's investigate triangles

    Age
    5 to 7
    Challenge level
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    Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

  • problem

    Round and round the circle

    Age
    7 to 11
    Challenge level
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    What happens if you join every second point on this circle? How about every third point? Try with different steps and see if you can predict what will happen.

  • Doplication
    problem

    Doplication

    Age
    7 to 11
    Challenge level
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    We can arrange dots in a similar way to the 5 on a dice and they usually sit quite well into a rectangular shape. How many altogether in this 3 by 5? What happens for other sizes?