Evaluation for 5.2c
Materials provide opportunities for students to evaluate mathematical representations, models, strategies, and solutions for efficiency, flexibility, and accuracy throughout learning pathways.
Materials provide opportunities for students to evaluate mathematical representations, models, strategies, and solutions for efficiency, flexibility, and accuracy. For example, throughout grade-level activities, students choose their own strategies to solve problems, explain their approaches to partners, and engage in whole-class discussions to compare and reflect on which strategies were most helpful and why. This process supports students in considering the clarity, accuracy, and efficiency of different solution methods.In Mission 4, Lesson 2, students explore multiple strategies to represent teen numbers using linking cubes, place value charts, and hide zero cards. Teachers guide students to reflect on the efficiency of using pictorial versus symbolic representations as numbers increase, encouraging flexible use of tools based on context. Follow-up discussions help students evaluate how tools like the place value chart support decomposing numbers into tens and ones, fostering both accuracy and strategic thinking.Throughout learning pathways, materials prompt students to analyze their solution strategies by comparing different mathematical models, such as number bonds, number sentences, and drawings. For instance, in Mission 6, Lesson 13, students solve two-digit addition problems with various representations and reflect on which methods were easier or faster, promoting an understanding of flexibility and efficiency. Similarly, in Mission 2, Lesson 13, students check the consistency of their solutions across models, supporting evaluation of accuracy and alignment with problem contexts.