Introduction to Ratios & Proportions
Scale recipes and maps to build intuition for equivalent ratios.
Materials
6 materials1
Two-minute clip
1
Curiosity question strip
2
Annotated diagram
3
Recording sheet
3
Investigation sheet
4
Wrap-up question slide
Lesson plan
4 phases, 42 minGoal
Students can write equivalent ratios and solve a proportion problem by scaling or with a table.
1
Hook & warm-up
Spark curiosity with a quick prompt that connects introduction to ratios & proportions to what students already know.
5 min
class
Two-minute clip
Curiosity question strip
2
Direct instruction
Introduce the core ideas with a guided walkthrough and clear worked examples.
14 min
class
Annotated diagram
3
Guided practice
Students apply the concept in pairs or small groups while the teacher circulates and confers.
18 min
pair
Recording sheet
Investigation sheet
4
Wrap-up & check
Consolidate the big idea and check understanding with a short exit ticket.
5 min
single
Wrap-up question slide
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Ratings & comments
Not a perfect fit for my curriculum, but adapting it took twenty minutes instead of an evening.
Beautifully sequenced. The misconceptions listed in the teacher notes were exactly the ones my class walked in with.
Sixty-five minutes matches my experience too. I now split it across two shorter periods.
It works fine without the lab kit — I demoed the tricky step at the front and the rest is paper-based.
Same here — back-to-back is the way to go.
Solid lesson. A couple of the materials were hard to source on short notice, but everything else was excellent.
Totally agree, the wrap-up is the strongest part.
This is now a staple in my unit. The progression from hook to wrap-up feels natural and easy to follow.
Thanks, this is really helpful feedback.
That is a fair point about the sourcing — I have listed two substitutes in the materials now.
Please do share the translation, that would help a lot of us.