Application Exercise 8.1: Developing Addition and Subtraction Number Sense

Application Exercise 8.1: Developing Addition and Subtraction Number Sense The teacher in this video is working with first-grade students on their addition and subtraction. Click the link to watch the video and answer the accompanying questions. Solving Addition and Subtraction from a Story Problem https://mediaplayer.pearsoncmg.com/assets/MMET_009_218_iPad Questions Part 1 Listen to the problem that the teacher poses for the children to solve. What problem structure is she presenting to them? Explain why this can be challenging for some students. Part 2 Explain what this teacher does to keep students’ focus and understanding of the problems she presents. Part 3 What strategies does the teacher use to scaffold and support the students as they are solving the problem? Application Exercise 8.2: Strategies for Teaching Operation through Contextual Problems The teacher in this video is working with third-grade students on their multiplication and division strategies. Click the link to watch the video and then answer the questions. Sheila Brown Multiplication and Division https://mediaplayer.pearsoncmg.com/assets/Class_MultiplicationDivision Questions Part 1 The student that solved the multiplication problem used a strategy. Explain what strategy she used and how the teacher guided the other students to see the student’s thinking. Part 2 How does Ms. Brown take the multiplication problem and turn it into a division problem? Part 3 Ms. Brown starts with the problem 88 cookies divided by 17 students then she asks them to think about 88 divided by 20 then to goes to 90 divided 20. Why is she changing the numbers in the division equation she wants them to estimate? Application Exercise 8.3: Observing and Responding to Student Thinking Click the link below to watch an eighth-grade student solve the problem, “The Marsal Company bought 275 widgets wholesale for $3.69 each. In the first month, the company sold 205 widgets at $4.99 each. How much did the company make or lose on the widgets? Do you think the Marsal Company should continue to sell widgets?” then answer the questions that follow. Multistep Problem: Widgets https://mediaplayer.pearsoncmg.com/assets/chapter_9_p_191_jw_gr7 Question Part 1 This student used the standard multiplication algorithm to produce exact answers for both calculations. How might you engage him in an explicit discussion of his error? What role, if any, might the calculator play in this process? Part 2 Is there a hidden question(s) in this problem? Explain. Part 3 The student concludes that the Marsal Company should not continue to sell the widgets. What did he fail to consider in this problem? Part 4 What actions could you take to help the student examine (or expand) his thinking?