Being collaborative

  • problem

    Factor lines

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.

  • Sealed Solution
    problem

    Sealed solution

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    Ten cards are put into five envelopes so that there are two cards in each envelope. The sum of the numbers inside it is written on each envelope. What numbers could be inside the envelopes?

  • A chopped carrot beside a whole carrot. The carrot top sits away from the chopped carrot.
    problem

    Remainders

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?

  • Eight hidden squares
    problem

    Eight hidden squares

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    On the graph there are 28 marked points. These points all mark the vertices (corners) of eight hidden squares. Can you find the eight hidden squares?

  • Making Rectangles
    problem

    Making rectangles

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    A task which depends on members of the group noticing the needs of others and responding.

  • problem

    Doughnut percents

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    Can you make doughnuts by matching these fractions, decimals and percentages?

  • problem

    Counting cogs

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    Which pairs of cogs let the coloured tooth touch every tooth on the other cog? Which pairs do not let this happen? Why?

  • Castles in the middle
    problem

    Castles in the middle

    Age
    7 to 14
    Challenge level
    filled star filled star empty star
    This task depends on groups working collaboratively, discussing and reasoning to agree a final product.
  • Method in multiplying madness?
    problem

    Method in multiplying madness?

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    Watch our videos of multiplication methods that you may not have met before. Can you make sense of them?

  • problem

    Three neighbours

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    Take three consecutive numbers and add them together. What do you notice?