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

Grade 1 - Addition And Subtraction Within 20

Relating Counting To Addition And Subtraction

Adding Within 20

Subtracting Within 20

Word Problems Addition And Subtraction

Adding Three Numbers