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Ratio and proportion

Mathematics

Ratio and proportion

An AR classroom game for Grade 6. Learners can aim with their hands at the camera or play by tapping the screen.

This set has 6 questions in an interactive multiple choice activity.

Curriculum indicatorค 1.1 ป.6/6

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. What is the ratio 2 : 4 in its simplest form?

    • 1 : 2
    • 2 : 2
    • 1 : 4
    Read the explanation

    Divide both sides by two to get one to two - simplify a ratio by dividing by the highest common factor.

  2. If 3 : 5 = 6 : x, what is x?

    • 8
    • 10
    • 12
    Read the explanation

    Three times two is six, so the other side is multiplied by two too: five times two is ten.

  3. 120 baht shared in the ratio 1 : 2 - how much does the second person get?

    • 40
    • 60
    • 80
    Read the explanation

    Three shares in all, so one share is forty baht; the second person gets two shares - eighty baht.

Before you play

Game teaching guide

What children will practise

Write ratios in simplest form, find equivalent ratios (ค 1.1 ป.6/3), share money in a ratio, and solve ratio problems such as distance over time and discounts (ค 1.1 ป.6/11).

What's in the worksheet

6 questions, multiple choice with 3 options - 2 : 4 in simplest form (1 : 2) - If 3 : 5 = 6 : x, find x (10) - 120 baht shared 1 : 2: the second share (80) - 12 : 18 in simplest form (2 : 3) - 20% off 250 baht (50)

How to use it in class

Use after teaching equivalent ratios; about 5-6 minutes. - Play in teams; for Q3 draw a bar split into 3 equal parts on the board - If many miss Q2, point out 3 became 6 by multiplying by 2, so 5 must be multiplied by 2 too - After Q5, ask why 6 : 9 is not yet simplest form - Play it linked to the class to record results in the mark book.

Common sticking points

- Q2: adding 3 instead of doubling (3 + 3 = 6, so 5 + 3 = 8) gives 8, which is offered - Q3: halving 120 to 60 because of the 2, or giving 40, the first person's share - Q5: stopping at 6 : 9, which is offered and still simplifies

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

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