Download Know – Understand – Do Organizer - ws2math09-10

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: