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Topic world · ages 5–10

Numbers and Shapes

Compare numbers, count in tens and tell shapes apart. Read the cards, try one thing at home and answer the 10-question picture quiz.

Cards

  • The sign > opens toward the bigger number

    The sign > means 'greater than'. Its open side faces the bigger number, so 7 > 4 is true.

    Try at home: Put 5 buttons in one pile and 3 in another. Say which pile is bigger, then point to the sign that fits between them.

  • Even numbers split into two equal groups

    A number is even when you can split it into two equal groups with none left over. If one is left over, the number is odd.

    Try at home: Take 6 small things and make two equal piles. Then take 7 and try the same. Which one leaves one over?

  • We count in groups of ten

    Our number system is base ten. It uses the digits 0 to 9. After 9, a new group of ten starts, and it is written as 10.

    Try at home: Take 23 beans and make groups of ten. How many full groups of ten do you get, and how many are left over?

  • A triangle has three corners

    A triangle has 3 straight sides and 3 corners. Its three angles always add up to 180 degrees.

    Try at home: Draw a triangle with a ruler. Count the sides, then the corners. Do you get 3 both times?

  • A square has four equal sides

    A square has four sides of the same length. A rectangle also has four right corners, but two of its sides are longer than the other two.

    Try at home: Fold a square piece of paper in half and open it. Is the new shape a square or a rectangle? Count its sides.

  • A circle has no corners

    A circle has no straight sides and no corners. Every point on its edge is the same distance from its centre.

    Try at home: Draw around a cup on paper. Mark the centre, then draw lines from it to the edge. Are they all the same length?

Numbers and Shapes quiz

Ten questions, one at a time. A wrong answer is not a loss: try again, and a hint is there.

For grown-ups

  • Ask: which round, square and triangle things can you find at home?
  • Ask after the quiz: which fact was new? Try the sign game with two cups of beans together.
  • Sources are listed in this section. Game progress is saved only on this device.

Sources

  • The sign > opens toward the bigger number: Britannica, Inequality (mathematics)
  • Even numbers split into two equal groups: Britannica, Parity (even and odd numbers)
  • We count in groups of ten: Britannica, Decimal number system
  • A triangle has three corners: Britannica, Triangle
  • A square has four equal sides: Britannica, Square and rectangle
  • A circle has no corners: Britannica, Circle