This is a sample task from achievethecore.org. The purpose of this task is for students to solve word problems that call for addition of three whole numbers (1.OA.2), to relate counting on to addition (1.OA.5), and to understand that the two digits of a two-digit number represent amounts of tens and ones (1.NBT.2). This task supports developing conceptions of counting on and base-ten structure, and is thus appropriate early in the school year
The Very Hungry Caterpillar
Grade Level
Grades K-2
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Lesson Plan
Standards Alignment
Common Core State Standards
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Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
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