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Math lesson plan Β· Kindergarten (Reception and Year 1 in England) Β· 60 minutes

Find the missing piece of a pattern

Algebra

England: Reception ShapeEngland: Y1 Geometry

Objective and success criteria

Students will: Find the missing piece of a 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? AB patterns

Leads to: Growing patterns: the same amount added each step

Materials: Balance scales or a balance drawing, Algebra tiles, Function machine cards, Mini whiteboards and pens, Printed student sheet (below).

Warm-up Β· 6 min

  • Quick retrieval from earlier learning (What comes next? AB patterns). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. What comes next? β–² β™₯ β–² β™₯ ? (β–² / β™₯ / β– ) β†’ β–²Prompt: Say the pattern out loud.
  2. A bead necklace goes: green, red, green, red, green, … What colour comes next? (green / red) β†’ redPrompt: The colours take turns.
  3. What comes next? β—† β™₯ β—† β™₯ β—† ? (β—† / β™₯ / β˜…) β†’ β™₯Prompt: Say the pattern out loud.

Hook Β· 6 min

  • Show a "think of a number" puzzle and ask the class to work out the starting number.
  • Share the objective: Find the missing piece of a pattern. Read the success criteria together.

I do: model it Β· 12 min

  • Work through the example out loud, saying why you do each step, not just what you do.
  • Example: Which shape is missing? β˜… β—† β–² β˜… β—† β–² β˜… ? β–²
  • Step 1: β˜… β—† β–² β˜… β—† β–² β˜… β—† β–²
  • Step 2: β—†
  • Answer: β—†
  • Pause after each step and ask a student to say what comes next.

We do: guided practice Β· 12 min

  • Do these together. Students try each step on whiteboards before you reveal it.
  • Use the hints as prompts rather than giving the answer.
  1. Which shape is missing? ● β™₯ β™₯ ? β™₯ β™₯ ● β™₯ β™₯ (● / β™₯ / β—†) β†’ ●Prompt: Find the part that repeats.
  2. Which shape is missing? β–² β™₯ β™₯ β–² ? β™₯ β–² β™₯ β™₯ (β–² / β™₯ / β˜…) β†’ β™₯Prompt: Find the part that repeats.

You do: independent practice Β· 17 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 Β· 7 min

  • Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
  1. Which shape is missing? β–  β™₯ β™₯ β–  β™₯ β™₯ β–  ? β™₯ (β–  / β™₯ / β—†) β†’ β™₯Prompt: Find the part that repeats.
  2. Which shape is missing? β–  β–  β—† β–  β–  ? β–  β–  β—† (β–  / β—† / β–²) β†’ β—†Prompt: Find the part that repeats.

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? AB 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

  • Move on to: Growing patterns: the same amount added each step.
  • 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/kindergarten.

Free lesson plan from eurekami.com/lesson-plan-builder

eurekami

Find the missing piece of a pattern

Name

Date

Score/ 8

  1. Question 1

    Towers of cubes grow by the same amount each time: 1, 2, ?, 4, 5 cubes. How many cubes are in the missing tower?

    0123451122034455

    Answer

  2. Question 2

    Which shape is missing? β—† β—† ● ? β—† ● β—† β—† ●

    • A. β—†
    • B. ●
    • C. β™₯
  3. Question 3

    Towers of cubes grow by the same amount each time: 3, ?, 5, 6, 7 cubes. How many cubes are in the missing tower?

    012345673102536475

    Answer

  4. Question 4

    Which shape is missing? β—† β–  β–  β—† β–  β–  ? β–  β– 

    • A. β—†
    • B. β– 
    • C. β˜…
  5. Question 5

    Towers of cubes grow by the same amount each time: 5, ?, 9, 11, 13 cubes. How many cubes are in the missing tower?

    012345678910111213510293114135

    Answer

  6. Question 6

    Which shape is missing? β˜… ● ● β˜… ● ? β˜… ● ●

    • A. β˜…
    • B. ●
    • C. β– 
  7. Question 7

    Towers of cubes grow by the same amount each time: 1, ?, 5, 7, 9 cubes. How many cubes are in the missing tower?

    01234567891102537495

    Answer

  8. Question 8

    Which shape is missing? β—† β—† β–  β—† β—† β–  ? β—† β– 

    • A. β—†
    • B. β– 
    • C. β˜…

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Answer key: Find the missing piece of a pattern

  1. 1. 3

  2. 2. A. β—†

  3. 3. 4

  4. 4. A. β—†

  5. 5. 7

  6. 6. B. ●

  7. 7. 3

  8. 8. A. β—†