# Unit Overview: Addition and subtraction within 6

## Lessons:

5 lessons

### Exploring the concept of zero

In this lesson, we will learn what the number zero looks like, where it falls on a number line and how to represent it.

• 12m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Combining two groups

In this lesson, we will learn how to combine two parts to make a whole. We will also learn the language of plus and equal to.

• 16m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Combining two groups including zero

In this lesson, we will continue to combine two parts, however zero will now be included in this specifically. We will address what this means when thinking about parts and the whole.

• 20m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Exploring subtraction by partitioning

In this lesson, we will begin to understand subtraction as partitioning. We will use the language of whole, part, subtract and equal to.

• 14m Video
• Presentation(PPT)
• Worksheet
• Transcript