PS 57 Grade-2 Go Math Unit Plan – Chapter - 6
CCLS - Domain- Domain- Operations and Algebraic Thinking /Number and Operations in Base Ten
March
CCLS Standards: CC.2.NBT.7
Essential Questions:
What are some strategies for adding and
subtracting 3 digit numbers?
Big Ideas:
3 Digit Addition and Subtraction
Content: (know)
Students will:
 Draw quick pictures to show adding 3 digit
numbers
 Break apart addends to add hundreds,
tens, and then ones
 Know when to regroup ones in addition
 Know when to regroup tens in addition
 Know when to regroup in addition
 Make a model to help when solving
subtraction problems
 Know when to regroup tens in subtraction
 Know when to regroup hundreds in
subtraction
 Know when to regroup in subtraction
 Know how to regroup when there are
zeros in the number you start with
Skills: (Do)
Students will:
 Draw quick pictures to represent 3 digit addition
 Apply place value concepts when using a break
apart strategy for 3 digit addition
 Record 3 digit addition using the standard
algorithm with possible regrouping of ones
 Record 3 digit addition using the standard
algorithm with possible regrouping of tens
 Record 3 digit addition using the standard
algorithm with possible regrouping of both ones
and tens
 Solve problems involving 3 digit subtraction by
using the strategy make a model
 Record 3 digit subtraction using the standard
algorithm with possible regrouping of tens
 Record 3 digit subtraction using the standard
algorithm with possible regrouping of hundreds
 Record 3 digit subtraction using the standard
algorithm with possible regrouping of hundreds
and tens
 Record subtraction using the standard algorithm
when there are zeros in the minuend
Key Terms / Vocabulary:
Regroup, difference, hundreds, tens, ones, addends, sum,
Assessments:
Show What You Know, Soar to Success , Lesson Quick Check, Mid Chapter Checkpoint, Chapter Review, Chapter
Test
Learning Activities:
2-Digit Shuffle game, Problem of the Day to review, Calendar Math to review, Math Journal to reinforce
mathematical practices, base ten blocks to model and solve 3 digit addition and subtraction problems,
Resources/Additional Notes:
iTools, Animated Math Models, Mathboards, Mega Math, eStudent edition
-----------------------------------------------------------------------------------------------------------------------------------------------------UDL- Differentiated Instruction:
Low
Small Group
Independent Activities
Tier 3 Intensive Intervention
Reteach Book
Soar to Success
Middle
Tier 1 On-Level Intervention
Tier 2 Strategic Intervention
Standards Practice Book
Mega Math
iTools
ELL:
Small Group providing Language Support
ELL push in teacher
ELL Activity Guide
Mega Math
iTools
Partner Work
High
Enrich Activity
Enrich Book
Extend the Project
Mega Math
iTools
Partner work