Mathematics

Borrowing, the 5 times table, units

An AR classroom game for Grade 2. 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.2/4

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
Sort the sums into groups.
Sort into
- no borrowing needed
- needs borrowing
- 45 - 23
- 42 - 17
- 68 - 34
- 51 - 29
Read the explanation
See whether the ones can be subtracted directly or need a borrow.
02
Sort the numbers into groups.
Sort into
- in the 5 times table
- not in the 5 times table
- 20
- 22
- 35
- 38
Read the explanation
Numbers in the five times table end in zero or five.
03
Sort the numbers into groups.
Sort into
- less than 70
- more than 70
- 45
- 88
- 69
- 91
Read the explanation
Compare the tens with seven - fewer than seven tens means less than seventy.

Before you play

Game teaching guide

What children will practise

Decide whether a two-digit subtraction needs borrowing, a step towards subtraction (indicator ค 1.1 ป.2/4), recognise multiples of 5, compare numbers with 70, and tell units of time from units of money.

What's in the worksheet

4 sorting questions with 2 boxes each - 45 - 23 and 68 - 34 need no borrowing; 42 - 17 and 51 - 29 do - 20 and 35 are in the 5 times table; 22 and 38 are not - 45 and 69 are less than 70; 88 and 91 are more - Minute and hour are units of time; baht and satang are units of money

How to use it in class

Use just before teaching subtraction with borrowing, so pupils learn to spot which ones need it. About 5-7 minutes; solo mode shows individual understanding. - For the borrowing question, pupils need not work out answers: just compare the ones digits - For the 5 times table, count up in fives together to 40 - 69 versus 70 is a good moment to talk about numbers that are very close - Play it linked to the class to record results in the mark book

Common sticking points

- Putting 51 - 29 under "no borrowing" because 5 tens is more than 2 tens. Stress that the ones (1 and 9) decide it - Placing 69 in "more than 70" because the 9 looks big. Compare the tens first - Satang is unfamiliar to some since the coins are rarely used now. Show a 25 or 50 satang coin