Length/distance

  • Chippy's Journeys
    problem

    Chippy's journeys

    Age
    7 to 11
    Challenge level
    filled star empty star empty star
    Chippy the Robot goes on journeys. How far and in what direction must he travel to get back to his base?
  • Pentagonal
    problem

    Pentagonal

    Age
    14 to 16
    Challenge level
    filled star empty star empty star
    Can you prove that the sum of the distances of any point inside a square from its sides is always equal (half the perimeter)? Can you prove it to be true for a rectangle or a hexagon?
  • Timber!
    problem

    Timber!

    Age
    7 to 11
    Challenge level
    filled star filled star empty star
    How can the school caretaker be sure that the tree would miss the school buildings if it fell?
  • N is a Number
    problem

    N is a number

    Age
    11 to 14
    Challenge level
    filled star filled star filled star
    N people visit their friends staying N kilometres along the coast. Some walk along the cliff path at N km an hour, the rest go by car. How long is the road?
  • Rolling Around
    problem

    Rolling around

    Age
    11 to 14
    Challenge level
    filled star filled star empty star
    A circle rolls around the outside edge of a square so that its circumference always touches the edge of the square. Can you describe the locus of the centre of the circle?
  • Home Time
    problem

    Home time

    Age
    7 to 11
    Challenge level
    filled star filled star empty star
    Alice's mum needs to go to each child's house just once and then back home again. How many different routes are there? Use the information to find out how long each road is on the route she took.
  • The hare and the tortoise
    problem

    The hare and the tortoise

    Age
    7 to 11
    Challenge level
    filled star filled star filled star
    In this version of the story of the hare and the tortoise, the race is 10 kilometres long. Can you work out how long the hare sleeps for using the information given?
  • A Flying Holiday
    problem

    A flying holiday

    Age
    7 to 11
    Challenge level
    filled star empty star empty star
    Follow the journey taken by this bird and let us know for how long and in what direction it must fly to return to its starting point.
  • Bike Ride
    problem

    Bike ride

    Age
    7 to 11
    Challenge level
    filled star empty star empty star
    Nirmala and Riki live 9 kilometres away from the nearest market. They both want to arrive at the market at exactly noon. What time should each of them start riding their bikes?