Analyzing Student Work Strategies and Representations

Adding and Subtraction Strategies Teachers must know and teach for 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

Adding and Subtraction Strategies Use the NCDPI Unpacking Document for examples and expectations Resources in Tools4NCTeachers have rubrics and instructional suggestions based on student work Teachers explain examples of strategies and student work progressions in the videos below https://youtu.be/4RDzNwlH_bE https://youtu.be/MGu7sslaXJQ

Progressions of Student Work Utilize the table links for more examples and next steps ideas Math Topic with Link to Representations Links to Instructional Moves Documents Addition Within 10 Addition Within 20 Cluster 2 Instructional Moves Cluster 8 Instructional Moves Subtraction Within 20 Comparing Numbers Cluster 3 Instructional Moves Cluster 4 Instructional Moves How Many More or Fewer Cluster 1 Instructional Moves Change Unknown Problems Two-Digit Plus Multiple of 10 Cluster 5 Instructional Moves

Probing for Student Understanding Adding within 20 Probe both correct and incorrect answers Ask questions Allow students to model and explain Observe carefully Focus on student thinking Help clarify ideas Note important information Change Unknown Subtracting Multiples of Ten Using Subtraction to Solve Missing Addend Problem

Using Rubrics to Discuss Student Work Read rubric carefully Look at what is on students’ papers, not what is implied Note strategies and representations used Look for strengths and build on those Consider next steps