multiplying-mixed-numbers

# Interactive video lesson plan for: Multiplying mixed numbers

#### Activity overview:

Multiplying mixed numbers is easy: simply convert them to fractions first, then multiply using the shortcut (rule) for fraction multiplication.

The difficulty comes in remembering to change them to fractions!

Some students have misconception that you can multiply the whole-number parts and the fractional parts separately, such as (1 1/2) x (1 1/2) = 1 1/4. I show with an area model why that is wrong.

Lastly, I solve a word problem involving area of a rectangle and a square.

Tagged under: fractions,mixed numbers,multiplication

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1. Students enter a simple code

2. You play the video

3. The students comment

4. You review and reflect

* Whiteboard required for teacher-paced activities

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