Solving Problems with Proportions
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Objective
I can solve real-world problems using proportional reasoning.
Part 1 of 4
Warm-up video
mathantics · 10:30Vetted channel
We don't generate video — this one is by mathantics on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
A proportion is two equivalent ratios, and equivalent ratios must have the same units.
- 2
To solve a proportion with an unknown value, you can use a procedure called cross-multiplying.
- 3
A map is an example of a scaled drawing, which is proportional to the real thing and can be used to set up a proportion to find an unknown distance.
Part 3 of 4
Practice
7 questions
What is a proportion?
Explain why the units must be the same in both ratios of a proportion.
Part 4 of 4
Exit ticket
Quick comprehension check
“A recipe requires 2 eggs for every 3 cups of flour. If you want to make a larger batch using 12 cups of flour, how many eggs will you need? Show your work using a proportion.”
Sample answer included in the free materials
Get the materials
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Teacher Guide
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