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# Unit Overview: Algebra and problem solving

## Lessons:

4 lessons

### One Thousand and Eighty Nine

In this lesson, we will investigate some number problems, especially focusing on the number 9, and the rules of divisibility by 9.

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

### Pick a number

In this lesson, we will look at how different operations can affect the properties of a number. We will calculate a number of different operations using written worded instructions.

• 2 Quizzes
• 10m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Odd or even?

In this lesson, we will investigate the algebraic representations of odd and even numbers.

• 2 Quizzes
• 10m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Algebraic Proof

In this lesson, we will look at how we can use algebra to prove what happens to calculations with odd and even numbers.

• 2 Quizzes
• 15m Video
• Presentation(PPT)
• Worksheet
• Transcript