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# Unit Overview: Addition and subtraction within 20 (comparison)

## Lessons:

10 lessons

### Comparing sets using 'more' or 'fewer'

In this lesson, we will use the vocabulary 'more' and 'fewer' to describe sets of objects or numbers

• 1 Quiz
• 8m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Comparing two sets by finding the difference

In this lesson, we will compare two sets of objects and find out the difference between them.

• 2 Quizzes
• 9m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Exploring numbers with a difference of one or two on a number line

In this lesson, we will compare two sets of objects and find out the difference between them using a number line.

• 2 Quizzes
• 8m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Comparing numbers

In this lesson, we will compare number use mathematical language

• 2 Quizzes
• 8m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Applying 'make ten' to differences (Part 1)

In this lesson, we will use the 'make ten' strategy to find the differences between numbers

• 1 Quiz
• 9m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Applying 'make ten' to differences (Part 2)

In this lesson, we will continue using the 'make ten' strategy to find the differences between numbers

• 1 Quiz
• 6m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Writing equations to show comparison (Part 1)

In this lesson, we will write equations to show the difference between numbers and objects

• 1 Quiz
• 9m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Writing equations to show comparison (Part 2)

In this lesson, we will write equations to show the difference between numbers and objects

• 1 Quiz
• 6m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Solving comparison problems (Part 1)

In this lesson, we will use the strategies learnt throughout this unit to solve problems.

• 1 Quiz
• 7m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Solving comparison problems (Part 2)

In this lesson, we will use the strategies learnt throughout this unit to solve problems.

• 1 Quiz
• 8m Video
• Presentation(PPT)
• Worksheet
• Transcript