Grade 1 - Addition And Subtraction Within 20

total lessons: 19

Nº	Activity title	type
	Relating Counting To Addition And Subtraction
G1.3.1	Adding by Counting On	Learn Assisted practice Benchmark practice Bar Model Express Build a Rocket
G1.3.2	Skip-Counting by 2 to Add 2	Learn Assisted practice Benchmark practice Math Soccer
G1.3.3	Subtracting by Counting Backward	Learn Assisted practice Benchmark practice Bar Model Scale
	Adding Within 20
G1.3.4	Adding Two 1-Digit Numbers by Making 10	Learn Assisted practice Benchmark practice Mental Math Master
G1.3.5	Adding Two 1-Digit Numbers Using Doubles Facts	Learn Assisted practice Benchmark practice Build a Robot
G1.3.6	Adding Two 1-Digit Numbers Using Doubles Plus One Facts	Learn Assisted practice Benchmark practice Mental Math Master
G1.3.7	Adding Ones to 2-Digit Numbers by Grouping into 10 and Ones	Learn Assisted practice Benchmark practice Mental Math Master
G1.3.8	Adding Within 20: Games	Bar Model Scale Mental Math Master Math Soccer
G1.3.9	Doubles Facts: Games	Build a Robot Bar Model Scale Mental Math Master Math Soccer
	Subtracting Within 20
G1.3.10	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
G1.3.11	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
G1.3.12	Subtracting Within 20: Games	Bar Model Scale Mental Math Master Math Soccer
	Word Problems Addition And Subtraction
G1.3.13	Solving Subtraction Problems Using Doubles Facts of Addition	Learn Assisted practice Benchmark practice Build a Robot Math Soccer
G1.3.14	Solving One-Step Word Problems Involving Addition	Learn Assisted practice Benchmark practice Mental Math Master
G1.3.15	Solving One-Step Word Problems Involving Subtraction	Learn Assisted practice Benchmark practice Bar Model Scale Mental Math Master
	Adding Three Numbers
G1.3.16	Adding Three 1-Digit Numbers Within 20	Learn Assisted practice Benchmark practice Mental Math Master
G1.3.17	Solving Word Problems Involving Addition of Three Numbers	Learn Assisted practice Benchmark practice Bar Model Scale Mental Math Master Bar Model Express
G1.3.18	Solving Word Problems Involving Addition of Three 1-Digit Numbers Within 20	Learn Assisted practice Benchmark practice Mental Math Master Bar Model Express
G1.3.19	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