Grade 1 - Addition And Subtraction Within 20

total lessons: 18

Nº	Activity title	type
	Relating Counting To Addition And Subtraction
G1.3.2	Skip-Counting by 2 to Add 2	Math Soccer
G1.3.3	Subtracting by Counting Backward	Bar Model Scale
	Adding Within 20
G1.3.4	Adding Two 1-Digit Numbers by Making 10	Mental Math Master
G1.3.5	Adding Two 1-Digit Numbers Using Doubles Facts	Build a Robot
G1.3.6	Adding Two 1-Digit Numbers Using Doubles Plus One Facts	Mental Math Master
G1.3.7	Adding Ones to 2-Digit Numbers by Grouping into 10 and Ones	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	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	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	Build a Robot Math Soccer
G1.3.14	Solving One-Step Word Problems Involving Addition	Mental Math Master
G1.3.15	Solving One-Step Word Problems Involving Subtraction	Bar Model Scale Mental Math Master
	Adding Three Numbers
G1.3.16	Adding Three 1-Digit Numbers Within 20	Mental Math Master
G1.3.17	Solving Word Problems Involving Addition of Three Numbers	Bar Model Scale Mental Math Master
G1.3.18	Solving Word Problems Involving Addition of Three 1-Digit Numbers Within 20	Mental Math Master
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