WRDSB Math LRP - T2 G3 Number Sense

Grade 3 - Tier 2

(small group instruction on this topic should occur at least 6 weeks after Tier 1 instruction)

B1.1 read, represent, compose, and decompose whole numbers up to and including 1000, using a variety of tools and strategies, and describe various ways they are used in everyday life describe various ways they are used in everyday life
B1.2 compare and order whole numbers up to and including 1000, in various contexts
B1.3 round whole numbers to the nearest ten or hundred, in various contexts
B1.4 count to 1000, including by 50s, 100s, and 200s, using a variety of tools and strategies
B1.5 use place value when describing and representing multi-digit numbers in a variety of ways, including with base ten materials

By building numbers with different manipulatives students practice composing and decomposing
Always tie learning and activities back to magnitude and number relationships. Students need to be able to place and describe how big or small a number is in relation to other numbers, especially friendly numbers. For example, 90 is ten less than 100 so it is a little before 100 on the line. 100 is halfway between 0 and 200 so it is right in the middle of the space between the two numbers. This also means that 250 is 50 more than 200 and 50 less than 300.
Draw intentional links between manipulatives to help students understand numbers, their representations, and tools.

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