NC NAEP Project Module 2 - Activity 4 Conducting Interviews and Analyzing Problem-Solving Videos Elementary Module 2, Activity 4

Goals Based on videotaped examples, develop understanding of common student approaches to single-step and multi-step problems. Practice predicting student thinking on a particular task or item. Practice analyzing and assessing student work Learn how to teach children to use manipulatives as thinking tools. Elementary Module 2, Activity 4

Solve These Problems: Samuel had 37 baseball cards. He collected 28 more baseball cards this summer. How many cards does Samuel have in his baseball card collection now? Kelly has 24 tomato plants for her garden. She gave 16 plants to her mother. How many tomato plants does Kelly have left to plant in her garden? Elementary Module 2, Activity 4

Strategies Direct Modeling with Tens Invented Algorithm- Incremental Invented Algorithm- Combining Tens and Ones Invented Algorithm- Compensating Elementary Module 2, Activity 4

Problem Kevin had 84 gumdrops. During a week he ate 29 gumdrops. How many gumdrops does he have left? Elementary Module 2, Activity 4

Problem Gretchen’s Problem Elementary Module 2, Activity 4

Analyzing Videos 1) What written algorithm or artifact did the boy use to solve “Kevin’s Gumdrop” problem? 2) What thinking strategies did he use? 3) What written algorithm or artifact did Gretchen use to solve her problem? Elementary Module 2, Activity 4

Analyzing Videos 4) What strategies did Gretchen apply? 5) Which student was more confident about their answer? Why? 6) What implications do these videos suggest for instruction? Elementary Module 2, Activity 4