T4T How Many Daisies?
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Task excerpt:
Domain 
Operations and Algebraic Thinking 
Clusters 
Represent and solve problems. Understand and apply the properties of operations. Add and subtract within 20. 
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 fromChange Unknown • Put together/Take ApartAddend Unknown • CompareDifference Unknown NC.1.OA.4 Solve an unknownaddend 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 TogetherTake Apart/Addend Unknown 
Materials 
SF, cubes or counters, pencil 
Task 
Provide materials to the student. Read the problem
to the student: 17 flowers are in the
vase. 
Continuum of Understanding 


Not Yet Proficient 
Response includes 01 of the descriptors in “Meets Expectations” 
Strategies Used: q Trial and Error q Counting All q Counting On q ThinkAddition q Makes Tens q Basic Facts q Creates easier or known sums q Doubles q Doubles +/ 1, 2 q Other: 

Progressing 
Response includes 2 of the descriptors in “Meets Expectations” 


Meets Expectations 
Response includes all the descriptors in “Meets Expectations” · Correctly solves the problem: 9 daisies · Clearly explains using strategies such as basic facts, neardoubles, making tens and/or the relationship between addition and subtraction (instead of counting all) · Equation is accurate (e.g., 8 + * = 17; 17 = 8 + *) 
