Last updated: 7/10/2025

Grade 1 Math Trimester 1

Approximately 60 Days

Sums and Differences to Twenty

(1)	NY-1.OA.1	Use addition and subtraction within 20 to solve one step word problems involving situations of adding to, taking from, putting together, taking apart, and/or comparing, with unknowns in all positions.
(1)	NY-1.OA.3	Apply properties of operations as strategies to add and subtract.
(1)	NY-1.OA.4	Understand subtraction as an unknown-addend problem within 20.
(1)	NY-1.OA.5	Relate counting to addition and subtraction.
(1)	NY-1.OA.6a	Add and subtract within 20. Use strategies such as: counting on; making ten; decomposing a number leading to a ten; using the relationship between addition and subtraction; and creating equivalent but easier or known sums.
(1)	NY-1.OA.7	Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.
(1)	NY-1.OA.8	Determine the unknown whole number in an addition or subtraction equation with the unknown in all positions.

Essential Questions

What are different ways to model your thinking when adding or subtracting?

What are different strategies to use when adding or subtracting?

Focus Questions

A) What are different strategies you can use to find out how many there are altogether?

B) What is the part?

C) What is the whole?

D) Is there another strategy you can use to solve this problem?

E) How is an expression different than an equation?

F) How are the addition and subtraction sentences related?

G) What key word(S) will let you know whether you need to add or subtract to solve the word problem?

-Composition and Decomposition of Numbers

Addition Strategies:

-Counting On

-Make a Ten Strategy

- +1 and +0

- Lower doubles

-Word Problems: join, take from, part-part-whole, compare

-Addition Word Problems: result unknown, change unknown

-Part-Part- Whole Problems: Whole unknown, part unknown, and both addends unknown.

-Commutative Property of Addition equality

-Fluency Within 10

-Subtraction as an Unknown Addend Problem

-Take From Word Problems: Change unknown and result unknown

-Decomposition Strategies for Subtraction

-Subtraction Fluency Within 10

-Representations using objects, drawings & equations with the symbol for the unknown.

-Solve word poblems with three addends, two of which make a ten.

-Make ten when one addend is nine.

-Make a ten when one addend is eight.

Count on
Expression
Addend
Doubles
Number Bond
Part
Total and whole
Label
Addition, equal, and subtraction signs
Equation
Number sentence
Sum
Difference
Ten Frame
Add
Subtract
Minus
Plus
Decompose
Fact Family
Make a ten strategy
Graph

Academic Words:

1. convince

2. represent

3. combine

4. related

5. subtract

6. symbol

7. take away

8. total

9. true

10. unknown

Familiar Words:

1. compare

2. is greater than

3. is less than

4. number path

5. organize

6. partners

7. sort

8. tally marks

9. total

10. double

11. efficient

12. equal

13. expression

14. false

15. graph

16. minus

17. part

Learning Targets:

I can..........

-model problems involving addition or subtraction using drawings, manipulatives or the Read, Draw, Write strategy.

-Solve problems involving addition or subtraction.

-Apply properties of operations and the relationship between addition and subtraction.

-Add and subtract within 20.

-Count on from the larger addend.

-Represent the Make Ten strategy

-Implement the make Ten Strategy

-Write equations with a symbol for the unknown.

Eureka Math Squared Materials

Number Bonds

Addition Chart

120 Number Chart

Rekenrek

Counters

Number Path

5-Group Cards

Hide Zero Cards

Tens Frame

Videos

Jack Hartmann- Number Bonds to 10

https://www.youtube.com/watch?v=lD9tjBUiXs0

Add with a Pirate Song

https://www.youtube.com/watch?v=WT_wvvEvkw4

Subtract with a Pirate Song

https://www.youtube.com/watch?v=QkPa9V2wtZs

Add +1 song

https://www.youtube.com/watch?v=INHYb1RNaMM

Greg Tang: numbers on a tens frame

http://gregtangmath.com/tenframemania

Greg Tang: Developing Number Sense to 20

http://gregtangmath.com/numtanga

Greg Tang: Practice Addition Facts to 10

http://gregtangmath.com/mathlimbo

Interactive 100's Chart

https://aghandoura.com/100chart/Interactive%20Hundreds%20Chart%20_%20Toy%20Theater.html

Module 1 Assessment
Module 2 Assessment