Math lesson plan · 1st grade (Year 2 in England) · 45 minutes
Predict a later item in a repeating pattern
Algebra
England: Y1 GeometryEngland: Y2 Geometry
Objective and success criteria
Students will: Predict a later item in a repeating pattern.
- 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: What comes next? AAB, ABB and ABC patterns
Leads to: the next skill in this area.
Materials: Balance scales or a balance drawing, Algebra tiles, Function machine cards, Mini whiteboards and pens, Printed student sheet (below).
Warm-up · 5 min
- Quick retrieval from earlier learning (What comes next? AAB, ABB and ABC patterns). Students answer on mini whiteboards.
- Show answers together and note who needs support in the main task.
- What comes next? ■ ◆ ◆ ■ ◆ ◆ ■ ? (■ / ◆ / ▲) → ◆Prompt: Find the part that repeats.
- Which part repeats in this pattern? ♥ ♥ ◆ ♥ ♥ ◆ ♥ ♥ ◆ (♥ ◆ / ◆ ◆ ♥ / ♥ ♥ ◆ / ◆ ♥ ♥) → ♥ ♥ ◆Prompt: Start at the beginning. When does it start again?
- What comes next? ● ● ▲ ● ● ▲ ? (● / ▲ / ■) → ●Prompt: Find the part that repeats.
Hook · 5 min
- Show a "think of a number" puzzle and ask the class to work out the starting number.
- Share the objective: Predict a later item in a repeating pattern. 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: The pattern keeps going: ◆ ◆ ★ ◆ ◆ ★ … Which shape is number 11?
- Step 1: Positions 3, 6, 9, … end a repeat.
- Step 2: ◆
- Answer: ◆
- 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.
- The pattern keeps going: ★ ★ ◆ ★ ★ ◆ … Which shape is number 10? (★ / ◆) → ★Prompt: The pattern repeats every 3 shapes.
- Children stand in a line wearing red, yellow, red, yellow, … What colour is child number 11 wearing? (red / yellow) → redPrompt: Which positions are yellow: 2, 4, 6, …?
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.
- Children stand in a line wearing green, blue, green, blue, … What colour is child number 17 wearing? (green / blue) → greenPrompt: Which positions are blue: 2, 4, 6, …?
- The pattern keeps going: ■ ♥ ▲ ■ ♥ ▲ … Which shape is number 14? (■ / ♥ / ▲) → ♥Prompt: The pattern repeats every 3 shapes.
Watch out for
- Doing an operation to one side of an equation but not the other.
- Reading 3x as 3 + x, or thinking x always stands for one particular number.
Support and stretch
Support
- Review first: What comes next? AAB, ABB and ABC patterns.
- Use concrete materials: balance scales or a balance drawing.
- 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-1.
Free lesson plan from eurekami.com/lesson-plan-builder