T4T Green Apples
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Task excerpt:
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Domain |
Operations and Algebraic Thinking |
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Clusters |
Represent and solve problems. Understand and apply the properties of operations. Add and subtract within 20. |
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Standards |
NC.1.OA.1 Represent and solve addition and subtraction word problems, within 20, with unknowns, by using objects, drawings, and equations with a symbol for the unknown number to represent the problem, when solving: • Add to/Take from-Change Unknown • Put together/Take Apart-Addend Unknown • Compare-Difference Unknown NC.1.OA.4 Solve an unknown-addend problem, within 20, by using addition strategies and/or changing it to a subtraction problem NC.1.OA.6 Add and subtract, within 20, using strategies such as: • Counting on • Making ten • Decomposing a number leading to a ten • Using the relationship between addition and subtraction • Using a number line • Creating equivalent but simpler or known sums Put Together-Take Apart/Addend Unknown |
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Materials |
Cubes or counters, pencil |
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Task |
Provide materials to the student. Read the problem to the student: 20 apples are in the basket. |
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Continuum of Understanding |
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Not Yet Proficient |
Response includes 0-1 of the descriptors in “Meets Expectations” |
Strategies Used: q Trial and Error q Counting All q Counting On q Think-Addition q Makes Tens q Basic Facts q Creates easier or known sums q Doubles q Doubles +/- 1, 2 q Other: |
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Progressing |
Response includes 2 of the descriptors in “Meets Expectations” |
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Meets Expectations |
Response includes all the descriptors in “Meets Expectations” · Correctly solves the problem: 11 green apples. · Clearly explains using strategies such as basic facts, near-doubles, making tens and/or the relationship between addition and subtraction (instead of counting all) · Equation is accurate (e.g., 9 + * = 20; 20 = 9 + *) |
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