MATHEMATICS-7
ESSENTIAL UNIT 4 (E04)
(2-Digit Addition)
(July 2013)
Unit Statement: In this unit the student will explore two-digit addition with the goal of
recognizing and applying proper mathematics concepts and terminology, and developing
and applying problem-solving skills.
Essential Outcomes: (must be assessed for mastery)
Problem solving and higher order thinking components are essential for ‘A’ level mastery.
Each TSW can contain problem solving and higher order thinking components (as found
in suggested text).
1. The Student Will find a sum by breaking apart an addend to make a multiple of
10. (Go Math! 2 4.1, 4.2)*
2. TSW apply place value concepts when using a “break-apart” strategy for 2-digit
addition. (4.3)
3. TSW model 2-digit addition with regrouping. (4.4)
4. TSW model and record 2-digit numbers. (4.5, 4.6)
5. TSW practice 2-digit addition with and without regrouping. (4.7)
6. TSW rewrite horizontal addition in vertical form. (4.8)
7. TSW evaluate problems involving 2-digit addition by drawing a diagram. (4.9)
8. TSW write equations to represent addition situations. (4.10)
9. TSW find sums for three and four 2-digit numbers. (4.11, 4.12)
*Suggested Go Math! chapter sections to use with TSW’s
Introduced and Practiced Outcomes: (taught but not assessed)
1. The Student Will engage in critical mathematical thinking and problem solving.
2. TSW choose an appropriate computation method for addition.
3. TSW engage in daily calendar activities.
4. TSW discuss the unit concepts using the key terms.
5. TSW practice counting beyond 100.
6. TSW practice skip counting by two, three, four, five, and ten.
Key Terms and Concepts:
Digits
ones
tens
hundreds
sum
addend
regroup
13
QSI MATHEMATICS-7 E04
Copyright © 1988-2013
Suggested Assessment Tools and Strategies:
Attached rubric or teacher generated rubric
Go Math! 2 Assessment Guide: Chapter 4
Soar To Success Math, online
Suggested Resources:
Go Math! 2, Chapter 4, Student Edition (SE): Chapter 4 2-Digit Addition
Go Math! 2, Chapter 4, Standard Practice Book
Go Math! 2, Chapter 4, Teacher Edition (TE): Chapter 4 2-Digit Addition
Go Math! 2, Planning Guide: pgs. 50, 51
Everyday Counts Calendar Math kit
Go Math! 2 Online resources (see Course Outcomes)
Additional Resources:
These materials are not provided automatically, but schools are encouraged to purchase
them to support the course.
MathBoard
Counting Tape
Technology Links:
Destiny Webpath Express (found in school’s automated library system)
List of suggested online resources (See Course Outcomes)
Suggested Activities:



Grab and Go! Activity Cards: blue – 9, 11, orange – 9, 11, purple – 9, 11
Grab and Go! Literature: Nature’s Numbers, Butterfly Farm
Grab and Go! Games: 2-Digit Shuffle, Soccer Sums
Suggested Cross-curricular Activities:
Go Math! 2, Chapter 4 TE, pgs. 183, 187, 191
EVALUATION RUBRIC FOUND ON FOLLOWING PAGE…………………
14
QSI MATHEMATICS-7 E04
Copyright © 1988-2013
Student Name: _____________________________ Date: ______________________________
MATHEMATICS-7 E04 RUBRIC
2-Digit Addition Rubric
To receive a ‘B’, the student must show ‘B’ level mastery on ALL Essential Outcomes (TSW’s).
To receive an ‘A’, the student must show ‘A’ level mastery on All available TSW’s and ‘B’ level mastery on all remaining TSW’s.
Task
TSW
What I need to do…..E04 2-Digit Addition
‘A’ LEVEL
‘B’ LEVEL
Find a sum by breaking apart an addend to
make a multiple of 10.
I can break apart an addend to make a
multiple of 10.
Apply place-value concepts when using a
“break-apart” strategy for 2-digit addition.
I can use the “break-apart” strategy for
2-digit addition with place value.
Model 2-digit addition with regrouping.
I can generate and solve my own word
problems from a model or equation.
I can find sums with regrouping by using
models.
Model and record 2-digit numbers.
I can find and write sums of 2-digit
numbers by using pictures.
Practice 2-digit addition with and without
regrouping.
I can find sums with or without
regrouping.
Rewrite horizontal addition in vertical
form.
I can rewrite addition problems in
vertical form.
Evaluate problems involving 2-digit
addition by drawing a diagram.
I can explain how I solved 2-digit
addition problems using different
strategies.
I can solve 2-digit addition problems by
drawing a diagram.
Write equations to represent addition
situations.
Find sums for three and four 2-digit
numbers.
I can write a number sentence.
I can solve multi-step word problems
involving three and four 2-digit numbers.
15
QSI MATHEMATICS-7 E04
Copyright © 1988-2013
I can find sums for three and four 2-digit
numbers.
P
Teacher comments