Unit 40–3
Student page 120
Indicators
Outcomes N3.1a, N3.3, N3.2
The student is able to: • understand that multiplication can be used for repeated addition situations.
Skills
Resources • Base 10 MAB • calculator
Language • repeatedly • number sentences
• adding repeatedly • multiplying
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Teac he r
Memory Masters (N3.1a)
• The focus for this unit is place value.
• Students choose and use a repertoire of mental, paper and calculator strategies, meeting needed levels of accuracy and judging the reasonableness of results.
Main Activity (N3.2) Warm up
• Students take out their calculators and explore, making number patterns on the calculator.
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• Ask students if they know of any relationship between addition and multiplication. • To show the relationship, ask students to enter the following sequence into their calculator and describe what happened: 2+===== • Repeat this with: 3+==== 5+==== • Using the same process, find the missing numbers to complete the activities in Exercises 3 and 4. Note: Keystrokes may vary according to calculator model.
Challenge
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What to do
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Number (N3.3, N3.1a)
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• Using information from the activity in their workbook, ask students to explain, in their own words, the relationship between addition and multiplication. • Encourage students to use mathematical symbols to support their explanation.
• 180 • New Wave Maths Book D – Teachers Guide
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