Grade 3 - Tier 3
Addition and Subtraction
(small group withdrawal on this topic should occur prior to whole class Tier 1 instruction)
Embedded Files
Target Curriculum Expectations
Target Curriculum Expectations
B2. use knowledge of numbers and operations to solve mathematical problems
Watch this video to learn how to adminster & assess Entry Check-In.
Watch this video to learn how to adminster & assess Entry Check-In.
Watch this video to learn how to effectively use the Tracking Sheet & access the Problem Sets.
Watch this video to learn how to effectively use the Tracking Sheet & access the Problem Sets.
Things to Note
Things to Note
Fluency with addition and subtraction follows a developmental progression
(see Slides 2-5 of each problem set to review this progression).For more information about Foundational Facts and Derived Facts, please read the National Council of Teaching of Mathematics (NCTM) article called
"The Five Fundamentals".For more information about Strategies, please refer to the Ontario Ministry of Education's "Strategies for Mental Math" document and various resources that can be found in your school (e.g., What to Look For by Lawson, Minilessons by Fosnot, and Teaching Developmentally by Van De Walle).
Important Tools & Representations
Important Tools & Representations
Tools/Manipulatives: counters, rekenreks, base ten materials, relational rods, etc.
Representations/Models: ten frames, number path or number line, etc.
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