Grade 6 Math Grading Rubric: Ratio and Rates — Ratios, Scaling, Rates, Explaining

Learning Objectives

• Write a ratio in words and with a colon (a:b) and explain why the order matters.
• Find equivalent ratios by multiplying or dividing both parts by the same number.
• Simplify a ratio using the greatest common factor.
• Share an amount in a given ratio using a bar model.
• Find a unit rate and use unit rates to compare prices and speeds.

How to Use This Resource

• Share the rubric with students before the task so they know what success looks like.
• Circle one level per skill for each student; add the points (maximum 16).
• Record scores on the record sheet.

Classroom Activity Ideas

• Ratio Match (12 minutes, Groups of 3–4): Spread the cards face up. Players take turns to find a matching pair and say a sentence: "For every 2 red there are 5 blue."
• Best Buy Detective (15 minutes, Pairs): Each pair gets 3 products, each sold in two pack sizes. Find the price for one (unit rate) for each pack.
• Human Bar Model (10 minutes, Whole class): Call 5 students. Give 2 a red strip and 3 a blue strip: they are the bar model for 2:3. Give the "total" to the class (e.g. 30 sweets). Students work out one box.

Differentiation

Support: Use counters or cubes for every ratio question. Challenge: Ratios with three parts (2:3:5). English language learners: Teach the frame: "For every ___ there are ___."

Assessment

Exit tickets in lessons 1 and 3. Worksheet Parts A–E with the answer key. Unit Assessment (16 marks). Performance task (rubric): "Party Planner" — scale a recipe for a party and choose the best-buy ingredients.

Teacher Tips

Keep the bar model on the board all week: it works for sharing, recipes and scale. Prices use dollars ($) so the pack works in any country; swap in your local currency if you like.

What's Included

• 4 skills × 4 levels (Excellent, Good, Developing, Beginning)
• Task: Performance task: "Party Planner" — scale a recipe for 24 people, find the best-buy ingredients and explain your choices.
• Class record sheet
• Score bands: 14–16 = Excellent, 10–13 = Good, 6–9 = Developing, 4–5 = Beginning.

Additional Files

• Grade 6 Math Grading Rubric: Ratio and Rates — Ratios, Scaling, Rates, Explaining (DOCX)

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