Checking for Proportions
Free to teach as-is — the teacher guide, student handout, and slides are included.
Free — we'll email you an access link. Google Docs format.
Objective
I can determine if two ratios form a proportion.
Part 1 of 4
Warm-up video
Math with Mr. J · 7:18Vetted channel
We don't generate video — this one is by Math with Mr. J 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 formed by equal or equivalent ratios, meaning they represent the same comparison and relationship.
- 2
To determine if two ratios form a proportion using equivalent fractions, first write the ratios in fractional form, then find the least common multiple between the bottom terms.
- 3
If the equivalent ratios have the same value, then the original ratios are proportional; if the equivalent ratios are different, the original ratios are not proportional.
Part 3 of 4
Practice
3 questions
Rewrite the ratios 3:4 and 9:12 in fractional form. Then, determine if these ratios form a proportion. Explain your answer.
Determine if the ratios 4 to 6 and 6 to 9 form a proportion. Show your work by finding equivalent fractions.
Part 4 of 4
Exit ticket
Quick comprehension check
“Determine if the following ratios are proportional: 4 to 6 and 10 to 15. Show all steps.”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
Printable worksheet
Slides
Ready to present
We'll ask for your email to send your access link — nothing else.
Teaching a group at a different level?
Where are your students right now? We'll rebuild this lesson to match — including the teacher guide, student handout, and slides, saved to your Google Drive.
Adapt This Lesson
