Math lesson plan · 2nd grade (Year 3 in England) · 45 minutes
Give change from one dollar or one pound
Measurement
CCSS 2.MD.C.8England: Y2 MeasurementEngland: Y3 Measurement
Objective and success criteria
Students will: Give change from one dollar or one pound.
- 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: Count coins up to one dollar or one pound; Pairs of numbers that make 100
Leads to: the next skill in this area.
Materials: Rulers, scales and measuring jugs, Clock faces, Conversion chart, Mini whiteboards and pens, Printed student sheet (below).
Warm-up · 5 min
- Quick retrieval from earlier learning (Count coins up to one dollar or one pound; Pairs of numbers that make 100). Students answer on mini whiteboards.
- Show answers together and note who needs support in the main task.
- 20 + __ = 100 → 80Prompt: 2 tens and how many more tens make 10 tens?
- 50 + __ = 100 → 50Prompt: 5 tens and how many more tens make 10 tens?
- 10 + __ = 100 → 90Prompt: 1 ten and how many more tens make 10 tens?
Hook · 5 min
- Ask the class to estimate the length of the room or the weight of a bag before measuring it.
- Share the objective: Give change from one dollar or one pound. Read the success criteria together.
I do: model it · 10 min
- Work through the example out loud, saying why you do each step, not just what you do.
- Example: Leo buys a postcard for 40¢ and pays with $1. How much change, in cents?
- Step 1: 100 − 40 = 60
- Step 2: 60¢
- Answer: 60
- Pause after each step and ask a student to say what comes next.
We do: guided practice · 10 min
- Do these together. Students try each step on whiteboards before you reveal it.
- Use the hints as prompts rather than giving the answer.
- Zara buys a pencil for 95¢ and pays with $1. How much change, in cents? → 5Prompt: $1 is 100 cents.
- Count up to find the change from $1 for something that costs 49¢. How much change, in cents? → 51Prompt: From 49 to the next ten, 50.
You do: independent practice · 10 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 8 questions are on the student sheet below, with answers in the key.
Exit ticket · 5 min
- Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
- Felix has $1. Is that enough to buy a drink for 25¢ and a snack for 50¢? (Yes / No) → YesPrompt: Add the two prices.
- Isla buys a postcard for 60¢ and pays with $1. How much change, in cents? → 40Prompt: $1 is 100 cents.
Watch out for
- Measuring from the end of the ruler instead of zero.
- Converting units the wrong way (multiplying instead of dividing).
Support and stretch
Support
- Review first: Count coins up to one dollar or one pound.
- Use concrete materials: rulers, scales and measuring jugs.
- Give the first step of each question, or a partly worked example to finish.
- Pair with a confident partner for the guided practice.
Stretch
- 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-2.
Free lesson plan from eurekami.com/lesson-plan-builder