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ACQUISITION LESSON PLAN resources Math Expressions manual Unit 5 Lessons 4-6, 8, 11-13 and Unit 11 Lessons 9-12 Topic: Grade 2 Multi-Digit Addition Concept 2 Addition Methods Standards: 2.8.2DE, 2.1.2CGIJ, 2.5.2A, 2.2.2.ABGH L.E.Q. What methods can I use to add? What do students need to learn to be able to answer the Essential Question? Assessment Prompt #1: What strategies can I use to add a 1-digit number to a 2-digit number? H&R95 Assessment Prompt #2: How can I use decade partners to add? (Writing Prompt Intervention Activity Card 5-5 “Explain how knowing 8+2=10 helps you solve 80+20.”) Assessment Prompt #3: How does estimating help me add? Writing in math journal. Assessment Prompt #4: How do I add with the Show All Totals Method (SAT)? Writing Prompt Intervention Activity Card 5-10 (Explain the steps you would take to ad 35 and 47.) Math scribe Assessment Prompt #5: How do I add with the New Groups Below Method (NGB)? Ss write a story problem and show how to solve their problem. Assessment Prompt #6: How do I recognize & correct an error? Cory says the total of 67 & 85 is 142. Ss think, pair, share an explanation or Cory’s mistake. Assessment Prompt #7: How do I add 3-digit numbers? Writing – how would you solve 175+358? H&R243 Assessment Prompt #8: How do I add money? Writing Prompt Challenge Activity Card 11-11 Activating Strategy A book, such as “Hippos Go Berserk” (Sandra Boynton) – read and allow Ss to suggest methods to solve addition problems. -----------------------------------------------------------------------------------------------------------------------------Key Vocabulary to preview: Method, estimate, round, new groups above, new groups below, show all totals, math mountains, rule Teaching Strategies: Graphic Organizer: T Chart of steps for each method – filled in when introduced -----------------------------------------------------------------------------------------------------------------------------Instruction: Unit 5 Les. 4 A1 Add 1-Digit numbers to 2-digit numbers – discuss with math talk A3 Practice adding 2-digit numbers and 1-digit numbers SAB 151 AP # 1: H&R95 Instruction: Les. 5 A1 Decade partners of 100 A2 Add decade numbers over 100 Math Connection: Round to the Nearest Ten SAB 153, H&R 97 AP # 2: Writing Prompt Instruction: Les. 6 A1 Add Ones, Tens, and a Hundred A2 Ten Based Story Problems SAB 155 Math Connection: Estimate Using Tens SAB 156, H&R 99 Les. 8 A1 How many? A2 Estimate how many SAB 159, H&R 103, numbers 1 and 2 AP # 3: Answer question in math journal. Instruction: Les. 10 A1 The Grocery Store (fill in T chart with sequence of SAT Method) SAB 165 Practice SAT Method H&R 107 AP # 4: Writing Prompt Instruction: Les. 11 A1 Introduce the New Groups Below Method (fill in T chart for NGB Method) A2 Practice NGB Method H&R 109 Les. 12 A1 Solve and Discuss – Ss use favorite method SAB 169, H&R 111, 112 AP # 5: Ss write a story problem and show how to solve their problem. Instruction: Les. 13 A2 Favorite Addition Methods A3 Recognize and Correct Errors H&R 113 AP # 6: think, pair, share Instruction: Unit 11 Les. 9 A1 Making a New Hundred H&R 237 Les. 10 A2 Solve and Explain Story Problems SAB 360, H&R 239 AP # 7: Writing - how would you solve 175+358 Instruction: Les. 12 A1 Explain Addition Methods SAB 367, H&R 243 AP # 7: H&R 243 Instruction: Les. 11 A1 Animal Club Collection SAB 365, 366, H&R 241, 242 AP # 8: Writing Prompt -----------------------------------------------------------------------------------------------------------------------------Assignments: Student book pages 151, 155, 156, 159, 165, 169, 360, 367, 365, 366 Homework: Homework and Remembering Book pages 95, 97, 99, 103, 107, 109, 111, 112, 113, 237, 239, 243, 241, 242 Summarizing Strategy: Ss solve a story problem and explain (orally and/or in writing) how they solved it. An alternative method could be explained as well. Adaptations: see adaptations list Reflection: