Mathematics

Counting in tens

An AR classroom game for Grade 1. 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.1/1

Play Host 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.

01
10 + 10 = ?
- 20
- 30
- 15
Read the explanation
Two tens make twenty.
02
20 + 10 = ?
- 21
- 30
- 40
Read the explanation
Twenty plus ten makes thirty.
03
30 + 10 = ?
- 50
- 31
- 40
Read the explanation
Thirty plus ten makes forty.

Before you play

Game teaching guide

What children will practise

Count up and down in tens, add and subtract whole tens, and know that ten tens make one hundred, linked to indicator ค 1.1 ป.1/1 on numbers up to 100.

What's in the worksheet

6 questions, multiple choice with 3 options each - 10 + 10 = 20, 20 + 10 = 30 (21 is a distractor) - 30 + 10 = 40 (31 is a distractor) - 50 - 10 = 40 (49 is a distractor) - Counting in tens from 10 to 50 you say 5 numbers - 100 is ten tens

How to use it in class

Use once children know numbers to 20, to extend towards 100. About 5 minutes. - Before playing, count bundles of ten sticks together: ten, twenty, thirty - Play as a class; for question 5, count on fingers while saying ten, twenty, thirty, forty, fifty - If many choose 21, 31 or 49, point out that adding or taking ten changes only the tens digit - Play it linked to a class and the scores go into the class gradebook.

Common sticking points

- In questions 2 and 3, choosing 21 and 31 by adding one instead of ten; the distractors target this directly - In question 4, choosing 49 by taking one instead of ten - In question 5, choosing 4 by counting the jumps instead of the numbers said