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Lessons in this unit

Lesson 1

To add by counting on using a number line

Lesson 2

To subtract by counting back using a number line

Lesson 3

To add a 1-digit number to a teens number using a known fact

Lesson 4

To subtract a 1-digit number from a teens number using a known fact

Lesson 5

To use the 'Make ten' strategy to add two 1-digit numbers (Part 1)

Lesson 6

To use the 'Make ten' strategy to add two 1-digit numbers (Part 2)

Lesson 7

To use the 'Make ten' strategy to subtract a 1-digit number from a teen number (Part 1)

Lesson 8

To use the 'Make ten' strategy to subtract a 1-digit number from a teen number (Part 2)

Lesson 9

To use mathematical models and strategies for addition

Lesson 10

To use mathematical models and strategies for subtraction