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Grade 1: Addition And Subtraction Within 20
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Understanding Addition And Subtraction
Numbers To 20
Addition And Subtraction Within 20
Numbers To 40
Addition And Subtraction To 40
Numbers To 120
Addition And Subtraction To 100
Length
Time
Representing And Interpreting Data
Reasoning With Shapes
Show only public lessons
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Grade 1 -
Addition And Subtraction Within 20
total lessons:
19
Nº
Activity title
type
Relating Counting To Addition And Subtraction
1
Adding by Counting On
Learn
Assisted practice
Benchmark practice
2
Skip-Counting by 2 to Add 2
Learn
Assisted practice
Benchmark practice
Math Soccer
3
Subtracting by Counting Backward
Learn
Assisted practice
Benchmark practice
Bar Model Scale
Adding Within 20
4
Adding Two 1-Digit Numbers by Making 10
Learn
Assisted practice
Benchmark practice
Mental Math Master
5
Adding Two 1-Digit Numbers Using Doubles Facts
Learn
Assisted practice
Benchmark practice
Build Your Robot
6
Adding Two 1-Digit Numbers Using Doubles Plus One Facts
Learn
Assisted practice
Benchmark practice
Mental Math Master
7
Adding Ones to 2-Digit Numbers by Grouping into 10 and Ones
Learn
Assisted practice
Benchmark practice
Mental Math Master
8
Adding Within 20: Games
Mental Math Master
Bar Model Scale
Math Soccer
9
Doubles Facts: Games
Build Your Robot
Math Soccer
Mental Math Master
Bar Model Scale
Subtracting Within 20
10
Subtracting 1-Digit Numbers from 2-Digit Numbers by Grouping into 10 and Ones, Then Subtracting the Ones
Learn
Assisted practice
Benchmark practice
Mental Math Master
11
Subtracting 1-Digit Numbers from 2-Digit Numbers by Grouping into 10 and Ones, Then Subtract from the 10
Learn
Assisted practice
Benchmark practice
Mental Math Master
12
Subtracting Within 20: Games
Bar Model Scale
Mental Math Master
Math Soccer
Word Problems Addition And Subtraction
13
Solving Subtraction Problems Using Doubles Facts of Addition
Learn
Assisted practice
Benchmark practice
Math Soccer
Build Your Robot
14
Solving One-Step Word Problems Involving Addition
Learn
Assisted practice
Benchmark practice
Mental Math Master
15
Solving One-Step Word Problems Involving Subtraction
Learn
Assisted practice
Benchmark practice
Mental Math Master
Bar Model Scale
Adding Three Numbers
16
Adding Three 1-Digit Numbers Within 20
Learn
Assisted practice
Benchmark practice
Mental Math Master
17
Solving Word Problems Involving Addition of Three Numbers
Learn
Assisted practice
Benchmark practice
Bar Model Scale
Mental Math Master
18
Solving Word Problems Involving Addition of Three 1-Digit Numbers Within 20
Learn
Assisted practice
Benchmark practice
Mental Math Master
19
Adding Three Numbers: Games
Bar Model Scale
Mental Math Master