MA2-AR-01
selects and uses mental and written strategies for addition and subtraction involving 2- and 3-digit numbers
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Rounding Numbers to 10, 100 and 1000
A 60 minute lesson in which students will round 5-digit numbers to the nearest 10, 100 and 1000.
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Trade It!
A 60-minute lesson in which students learn how to trade when subtracting.
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Jump or Split
A 60-minute lesson in which students will learn the jump and skip strategies to subtract.
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Frolic with Fact Families
A 60-minute lesson in which students explore the relationship between the members of fact families.
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Aim for a Zero-Tail
A 60-minute lesson in which students learn the strategy of making ten to subtract.
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Finding Your Strategy
A 60-minute lesson designed to reinforce that students can choose to use different addition strategies in different situations.
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Assessment - Addition Strategies
A 30-minute assessment designed to assess students' understanding of working with place value to solve problems, the connection between addition and subtraction, and the development of efficient mental strategies for computation.
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Linking Addition and Subtraction
A 60-minute lesson designed to investigate the relationship between addition and subtraction.
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Split Strategy
A 60-minute lesson designed to progress students' understanding of mental addition by partitioning numbers into place value to help them find a total.
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Number Boards
A 60-minute lesson designed to explore the use of number boards/hundreds charts when adding numbers.
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Concrete Materials
A 60-minute lesson to reinforce students' understanding of basic addition principles, using concrete materials.
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Exploring Subtraction Strategies – Assessment
An assessment task in which students will demonstrate their knowledge and understanding of subtraction strategies.