Explaining, convincing and proving

  • Model solutions
    problem

    Model Solutions

    Age
    16 to 18
    Challenge level
    filled star empty star empty star
    How do these modelling assumption affect the solutions?
  • Trig identity
    problem

    Trig Identity

    Age
    16 to 18
    Challenge level
    filled star empty star empty star

    In this short challenge, can you use angle properties in a circle to figure out some trig identities?

  • Unit interval
    problem

    Unit Interval

    Age
    16 to 18
    Challenge level
    filled star empty star empty star

    Can you prove our inequality holds for all values of x and y between 0 and 1?

  • Gradient match
    problem

    Gradient Match

    Age
    16 to 18
    Challenge level
    filled star empty star empty star

    What can you deduce about the gradients of curves linking (0,0), (8,8) and (4,6)?

  • Turning to calculus
    problem

    Turning to Calculus

    Age
    16 to 18
    Challenge level
    filled star empty star empty star

    Get started with calculus by exploring the connections between the sign of a curve and the sign of its gradient.

  • Inner equality
    problem

    Inner Equality

    Age
    16 to 18
    Challenge level
    filled star empty star empty star

    Can you solve this inequalities challenge?

  • Archimedes Numerical Roots
    problem

    Archimedes Numerical Roots

    Age
    16 to 18
    Challenge level
    filled star empty star empty star

    How did Archimedes calculate the lengths of the sides of the polygons which needed him to be able to calculate square roots?

  • More Dicey Decisions
    problem

    More Dicey Decisions

    Age
    16 to 18
    Challenge level
    filled star empty star empty star
    The twelve edge totals of a standard six-sided die are distributed symmetrically. Will the same symmetry emerge with a dodecahedral die?
  • Seriesly
    problem

    Seriesly

    Age
    16 to 18
    Challenge level
    filled star empty star empty star

    Prove that k.k! = (k+1)! - k! and sum the series 1.1! + 2.2! + 3.3! +...+n.n!

  • Patterns of inflection
    problem

    Patterns of Inflection

    Age
    16 to 18
    Challenge level
    filled star empty star empty star

    Find the relationship between the locations of points of inflection, maxima and minima of functions.