Skip to content
Krufahda
Checking account…
Symmetry, decimals and units sorting

Mathematics

Symmetry, decimals and units sorting

An AR classroom game for Grade 4. Learners can aim with their hands at the camera or play by tapping the screen.

This set has 4 rounds in an interactive sorting activity.

Curriculum indicatorค 1.1 ป.4/5

PlayHost a classroom

A look before you play

Sample questions

A few real prompts from the game to help you choose an activity for your class.

  1. Sort the shapes into groups.

    Sort into

    • has a line of symmetry
    • no line of symmetry
    • square
    • the letter F
    • circle
    • the letter R
    Read the explanation

    Count the lines of symmetry in each shape.

  2. Sort the numbers into groups.

    Sort into

    • divides exactly by 4
    • does not divide exactly by 4
    • 124
    • 126
    • 240
    • 250
    Read the explanation

    A number divides by four exactly when its last two digits do.

  3. Sort the sums into groups.

    Sort into

    • written as a fraction
    • written as a decimal
    • 1/2
    • 0.5
    • 3/4
    • 0.75
    Read the explanation

    Fractions and decimals are two ways of writing the same value.

Before you play

Game teaching guide

What children will practise

End-of-P4 review: sort shapes with and without a line of symmetry, numbers that divide exactly by 4, the fraction and decimal forms of the same values (indicator ค 1.1 ป.4/5), and small versus large units.

What's in the worksheet

4 sorting questions with 2 boxes each - Square and circle have a line of symmetry; the letters F and R do not - 124 and 240 divide exactly by 4; 126 and 250 do not - 1/2 and 3/4 are written as fractions; 0.5 and 0.75 as decimals - Gram and centimetre are small units; kilogram and kilometre are large

How to use it in class

Use as an end-of-year review game, 5-6 minutes, team mode. - For symmetry, give teams paper to write F and R and fold them both ways - For dividing by 4, teach the last-two-digits check: for 124 look at 24, then ask 4 times what is 24 - After Q3, notice that 1/2 and 0.5 are the same value - Play it linked to the class to record results in the mark book

Common sticking points

- Thinking R has a horizontal line of symmetry because it looks like B. Fold real paper - Putting 126 under "divides by 4" because it is even. Point out that even numbers divide by 2 but not necessarily by 4 - Putting 250 under exact because it ends in 0, which is the rule for 10, not 4

Play together first, then build on it with a worksheet for the same level.

More games to try

More games from the same subject for the lesson you are planning.

See all games