Math lesson plan · 4th grade (Year 5 in England) · 30 minutes
Equivalent fractions
Fractions
CCSS 4.NF.A.1CCSS 3.NF.A.3.BEngland: Y4 FractionsEngland: Y5 Fractions
Objective and success criteria
Students will: Equivalent fractions.
- I can answer questions on today's skill on my own, without help.
- I can explain each step and say why it works.
- I can check my answer and spot a mistake.
Before and after
Needs first: Fractions on a number line; Times tables to 12 × 12
Leads to: Fractions as decimals; Compare fractions; Add and subtract fractions with like denominators
Materials: Fraction strips or a fraction wall, Paper strips to fold, Number lines, Mini whiteboards and pens, Printed student sheet (below).
Warm-up · 4 min
- Quick retrieval from earlier learning (Fractions on a number line; Times tables to 12 × 12). Students answer on mini whiteboards.
- Show answers together and note who needs support in the main task.
- 10 × 9 = ? → 90Prompt: Is there a fact you already know that is close?
- 3 × 5 = ? → 15Prompt: Is there a fact you already know that is close?
- 8 × 10 = ? → 80Prompt: Is there a fact you already know that is close?
Hook · 3 min
- Cut a pizza or a strip of paper unevenly and ask whether the pieces are really halves or quarters.
- Share the objective: Equivalent fractions. Read the success criteria together.
I do: model it · 7 min
- Work through the example out loud, saying why you do each step, not just what you do.
- Example: Simplify 2/8 to its simplest form.
- Step 1: Divide top and bottom by 2.
- Step 2: 2/8 = 1/4
- Answer: 1/4
- Pause after each step and ask a student to say what comes next.
We do: guided practice · 6 min
- Do these together. Students try each step on whiteboards before you reveal it.
- Use the hints as prompts rather than giving the answer.
- Simplify 3/12 to its simplest form. → 1/4Prompt: Find a number that divides both the numerator and denominator.
- Simplify 10/25 to its simplest form. → 2/5Prompt: Find a number that divides both the numerator and denominator.
You do: independent practice · 7 min
- Students work on the student sheet. Circulate and check the first two answers of every student early.
- Students who finish: write a question of their own for a partner, with the answer.
The 6 questions are on the student sheet below, with answers in the key.
Exit ticket · 3 min
- Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
- Simplify 5/15 to its simplest form. → 1/3Prompt: Find a number that divides both the numerator and denominator.
- Simplify 4/8 to its simplest form. → 1/2Prompt: Find a number that divides both the numerator and denominator.
Watch out for
- Thinking a bigger denominator means a bigger fraction (1/8 > 1/4).
- Adding the denominators when adding fractions (1/2 + 1/3 = 2/5).
Support and stretch
Support
- Review first: Fractions on a number line.
- Use concrete materials: fraction strips or a fraction wall.
- Give the first step of each question, or a partly worked example to finish.
- Pair with a confident partner for the guided practice.
Stretch
- Move on to: Fractions as decimals; Compare fractions; Add and subtract fractions with like denominators.
- Explain a common mistake in writing and how to fix it.
- Write a word problem that uses today's skill, then solve a partner's.
Homework and more practice
Free online practice with hints and printable worksheets for this skill: eurekami.com/math/grade-4.
Free lesson plan from eurekami.com/lesson-plan-builder