Free Grade 3 Working with Introducing Sampling Essentials: Visual Models — Recognition Flashcards
Free Grade 3 flashcards for Working with Introducing Sampling Essentials: Visual Models — Recognition: 12 real questions with a full answer key and worked solutions. Charts show data visually. In a pie chart, each category's angle is its fraction of the total multiplied by 360°.
Free
Foundation
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain working with introducing sampling essentials: visual models — recognition
Explain working with introducing sampling essentials: visual models — recognition accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing sampling essentials: visual models — recognition
Calculate working with introducing sampling essentials: visual models — recognition accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing sampling essentials: visual models — recognition
Compare working with introducing sampling essentials: visual models — recognition accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify working with introducing sampling essentials: visual models — recognition
Justify working with introducing sampling essentials: visual models — recognition 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 Introducing Sampling Essentials: Visual Models — Recognition works
Charts show data visually. In a pie chart, each category's angle is its fraction of the total multiplied by 360°.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.In a survey: Red 6, Blue 3, Green 8, Yellow 6. In a pie chart, what angle does Red get?[1]
- 2.In a survey: Red 8, Blue 10, Green 12, Yellow 3. In a pie chart, what angle does Yellow get?[1]
- 3.In a survey: Red 6, Blue 10, Green 10, Yellow 11. In a pie chart, what angle does Green get?[1]
- 4.In a survey: Red 5, Blue 13, Green 4, Yellow 13. In a pie chart, what angle does Yellow get?[1]
- 5.In a survey: Red 4, Blue 3, Green 15, Yellow 10. In a pie chart, what angle does Red get?[2]
- 6.In a survey: Red 3, Blue 11, Green 14, Yellow 2. In a pie chart, what angle does Green get?[2]
- 7.In a survey: Red 2, Blue 10, Green 12, Yellow 10. In a pie chart, what angle does Green get?[2]
- 8.In a survey: Red 7, Blue 13, Green 4, Yellow 8. In a pie chart, what angle does Red get?[2]
- 9.In a survey: Red 6, Blue 7, Green 10, Yellow 2. In a pie chart, what angle does Green get?[3]
- 10.In a survey: Red 3, Blue 9, Green 12, Yellow 13. In a pie chart, what angle does Red get?[3]
- 11.In a survey: Red 3, Blue 13, Green 13, Yellow 14. In a pie chart, what angle does Green get?[3]
- 12.In a survey: Red 5, Blue 8, Green 10, Yellow 13. In a pie chart, what angle does Blue get?[3]
Show answers and working
1. 93.9°
Total = 23. Red fraction = 6/23. 6/23 × 360° = 93.9°.
2. 32.7°
Total = 33. Yellow fraction = 3/33. 3/33 × 360° = 32.7°.
3. 97.3°
Total = 37. Green fraction = 10/37. 10/37 × 360° = 97.3°.
4. 133.7°
Total = 35. Yellow fraction = 13/35. 13/35 × 360° = 133.7°.
5. 45°
Total = 32. Red fraction = 4/32. 4/32 × 360° = 45°.
6. 168°
Total = 30. Green fraction = 14/30. 14/30 × 360° = 168°.
7. 127.1°
Total = 34. Green fraction = 12/34. 12/34 × 360° = 127.1°.
8. 78.8°
Total = 32. Red fraction = 7/32. 7/32 × 360° = 78.8°.
9. 144°
Total = 25. Green fraction = 10/25. 10/25 × 360° = 144°.
10. 29.2°
Total = 37. Red fraction = 3/37. 3/37 × 360° = 29.2°.
11. 108.8°
Total = 43. Green fraction = 13/43. 13/43 × 360° = 108.8°.
12. 80°
Total = 36. Blue fraction = 8/36. 8/36 × 360° = 80°.
Worked examples
In a survey: Red 11, Blue 4, Green 9, Yellow 11. In a pie chart, what angle does Blue get?
- Total = 35.
- Blue fraction = 4/35.
- 4/35 × 360° = 41.1°.
- Answer: 41.1°
In a survey: Red 4, Blue 12, Green 15, Yellow 4. In a pie chart, what angle does Red get?
- Total = 35.
- Red fraction = 4/35.
- 4/35 × 360° = 41.1°.
- Answer: 41.1°
In a survey: Red 4, Blue 2, Green 13, Yellow 2. In a pie chart, what angle does Red get?
- Total = 21.
- Red fraction = 4/21.
- 4/21 × 360° = 68.6°.
- Answer: 68.6°
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Uses 100 instead of 360 for pie-chart angles.
Correction: A full circle is 360°.
Forgets to find the total first.
Correction: Add all frequencies before working out fractions.
Teacher tips
- · Have pupils check that all angles add to 360°.
Parent tips
- · Look at charts in the news and ask what they show.
Real-life applications
- · News infographics, survey results.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
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- Start with Working with Introducing Sampling Essentials: Worked Examples. Each one has its own free lesson, worksheet and quiz.
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