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Free Grade 3 Working with Counterexamples Common Errors Lesson Plans

Free Grade 3 lesson plans for Working with Counterexamples Common Errors: 12 real questions with a full answer key and worked solutions. Counting on means saying the next numbers in order, adding the same amount each time. Counting in 2s, 5s and 10s is the first step towards times tables.

Price

Free

Difficulty

Foundation

Estimated time

25 min

Total marks

24

Learning objectives

Every objective is checkable, and each one maps to an activity and an assessment.

  • RememberIdentify working with counterexamples common errors

    Identify working with counterexamples common errors accurately in a familiar context.

    Assessed by: Exit ticket of four short items

  • UnderstandExplain working with counterexamples common errors

    Explain working with counterexamples common errors accurately in a familiar context.

    Assessed by: Exit ticket of four short items

  • ApplyCalculate working with counterexamples common errors

    Calculate working with counterexamples common errors accurately in a familiar context.

    Assessed by: Exit ticket of four short items

  • AnalyseCompare working with counterexamples common errors

    Compare working with counterexamples common errors accurately in a familiar context.

    Assessed by: Exit ticket of four short items

Prerequisites

Close these gaps first — each has its own free lesson, worksheet and quiz.

How Working with Counterexamples Common Errors works

Counting on means saying the next numbers in order, adding the same amount each time. Counting in 2s, 5s and 10s is the first step towards times tables.

Key wordscount oncount backpatternskip counting

12 practice questions

Easy to hard, 24 marks in total. Try them first, then open the answers.

  1. 1.Count on in 2s: 12, 14, 16, 18, __, __[1]
  2. 2.Count on in 2s: 14, 16, 18, 20, __, __[1]
  3. 3.Count on in 1s: 10, 11, 12, 13, __, __[1]
  4. 4.Count on in 2s: 16, 18, 20, 22, __, __[1]
  5. 5.Count on in 5s: 65, 70, 75, 80, __, __[2]
  6. 6.Count on in 5s: 55, 60, 65, 70, __, __[2]
  7. 7.Count on in 5s: 110, 115, 120, 125, __, __[2]
  8. 8.Count on in 5s: 5, 10, 15, 20, __, __[2]
  9. 9.Count on in 5s: 195, 200, 205, 210, __, __[3]
  10. 10.Count on in 5s: 75, 80, 85, 90, __, __[3]
  11. 11.Count on in 10s: 230, 240, 250, 260, __, __[3]
  12. 12.Count on in 10s: 180, 190, 200, 210, __, __[3]
Show answers and working
  1. 1. 20, 22

    Each number is 2 more than the one before. 18 + 2 = 20 20 + 2 = 22

  2. 2. 22, 24

    Each number is 2 more than the one before. 20 + 2 = 22 22 + 2 = 24

  3. 3. 14, 15

    Each number is 1 more than the one before. 13 + 1 = 14 14 + 1 = 15

  4. 4. 24, 26

    Each number is 2 more than the one before. 22 + 2 = 24 24 + 2 = 26

  5. 5. 85, 90

    Each number is 5 more than the one before. 80 + 5 = 85 85 + 5 = 90

  6. 6. 75, 80

    Each number is 5 more than the one before. 70 + 5 = 75 75 + 5 = 80

  7. 7. 130, 135

    Each number is 5 more than the one before. 125 + 5 = 130 130 + 5 = 135

  8. 8. 25, 30

    Each number is 5 more than the one before. 20 + 5 = 25 25 + 5 = 30

  9. 9. 215, 220

    Each number is 5 more than the one before. 210 + 5 = 215 215 + 5 = 220

  10. 10. 95, 100

    Each number is 5 more than the one before. 90 + 5 = 95 95 + 5 = 100

  11. 11. 270, 280

    Each number is 10 more than the one before. 260 + 10 = 270 270 + 10 = 280

  12. 12. 220, 230

    Each number is 10 more than the one before. 210 + 10 = 220 220 + 10 = 230

Worked examples

Easy example

Count on in 2s: 8, 10, 12, 14, __, __

  1. Each number is 2 more than the one before.
  2. 14 + 2 = 16
  3. 16 + 2 = 18
  4. Answer: 16, 18
Medium example

Count on in 5s: 20, 25, 30, 35, __, __

  1. Each number is 5 more than the one before.
  2. 35 + 5 = 40
  3. 40 + 5 = 45
  4. Answer: 40, 45
Hard example

Count on in 5s: 60, 65, 70, 75, __, __

  1. Each number is 5 more than the one before.
  2. 75 + 5 = 80
  3. 80 + 5 = 85
  4. Answer: 80, 85

Interactive practice

Free, no account required — answer on screen or print it.

Common mistakes

What learners typically get wrong, and how to fix it.

  • Says the starting number as the first count when counting on.

    Correction: Point to the start number, then say the NEXT number as 'one'.

  • Loses the pattern when crossing a ten (e.g. 28, 29, 20).

    Correction: Use a 100 square so the child sees the row change.

Teacher tips

  • · Use a 100 square and colour each skip-count pattern in a different colour.

Parent tips

  • · Count stairs in 2s or cars in 5s on a walk.

Real-life applications

  • · Counting coins in 5s and 10s, counting pairs of socks in 2s.

Assessment objectives

How mastery is evidenced, and which standards it maps to.

CAMBRIDGE CAM-518.1 — Mapped statement covering Working with Counterexamples Common Errors.NATIONAL-CURRICULUM NAT-114.2 — Mapped statement covering Working with Counterexamples Common Errors.

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Frequently asked

Is this Grade 3 Working with Counterexamples Common Errors lesson plan really free?
Yes. Every lesson plans on FreeMathWorksheet is free to use, print and share — no account, no paywall and no watermark.
What should a learner already know before this?
Start with Working with Counterexamples Word Problems, Working with Counterexamples Techniques, Introducing Counterexamples. Each one has its own free lesson, worksheet and quiz.
How is the lesson plan sequenced?
Recognition first, then understanding, application, reasoning and finally mastery — the same ladder used across every free resource on the platform.
What comes next after Working with Counterexamples Common Errors?
Move on to Introducing Counterexamples, Counterexamples in Context, which build directly on this idea.

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