Five Sweets Per Packet

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Achievement Objectives
NA1-1: Use a range of counting, grouping, and equal-sharing strategies with whole numbers and fractions.
Specific Learning Outcomes

Solve multiplication problems using skip counting in twos, fives, and tens.

Description of Mathematics

Number Framework Stage 4

Required Resource Materials
A fives abacus (alternatively place value materials in bundles of five).
Activity

Using Materials

Problem: In each packet there are 5 sweets. Jackie has 3 packets. How many sweets does she have?

Discuss why you write 5 + 5 + 5 on the board. Solve this on the fives abacus.

Examples. Word stories and recording for the number of sweets in 4 packets, 6 packets, 2 packets, 7 packets….

Using Imaging

Shielding:
Norman has 3 packets and Lesley has 2 packets of sweets. How many sweets are there altogether?

Hide the fives abacus. Model 3 packets of 5 and ask the students what you are doing.

Write 15 on the board. Add 2 more packets on.

Record 15 + 10 on the board. Ask the students to imagine what you can see. Fold back if needed. Record the answer on the board.

Examples. Recording for 2 packets - 1 packet, 3 packets - 1 packet, 5 packets - 1 packet, 2 packets + 2 packets ,6 packets - 1 packet

Imaging Only: Examples. Without the fives abacus the students imagine and record:

3 packets - 2 packets,  5 packets - 4 packets, 9 packets - 8 packets,  9 packets + 1 packet….