Free Grade 3 Introduction to Introducing Sampling Essentials: Worked Examples Lesson Plans
Free Grade 3 lesson plans for Introduction to Introducing Sampling Essentials: Worked Examples: 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
Higher
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify introduction to introducing sampling essentials: worked examples
Identify introduction to introducing sampling essentials: worked examples accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain introduction to introducing sampling essentials: worked examples
Explain introduction to introducing sampling essentials: worked examples accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introduction to introducing sampling essentials: worked examples
Calculate introduction to introducing sampling essentials: worked examples accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introduction to introducing sampling essentials: worked examples
Compare introduction to introducing sampling essentials: worked examples 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 Introduction to Introducing Sampling Essentials: Worked Examples 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 13, Blue 10, Green 5, Yellow 9. In a pie chart, what angle does Yellow get?[1]
- 2.In a survey: Red 11, Blue 7, Green 4, Yellow 8. In a pie chart, what angle does Green get?[1]
- 3.In a survey: Red 7, Blue 9, Green 10, Yellow 5. In a pie chart, what angle does Yellow get?[1]
- 4.In a survey: Red 6, Blue 6, Green 7, Yellow 11. In a pie chart, what angle does Green get?[1]
- 5.In a survey: Red 11, Blue 5, Green 14, Yellow 11. In a pie chart, what angle does Green get?[2]
- 6.In a survey: Red 7, Blue 12, Green 5, Yellow 10. In a pie chart, what angle does Yellow get?[2]
- 7.In a survey: Red 13, Blue 10, Green 2, Yellow 3. In a pie chart, what angle does Blue get?[2]
- 8.In a survey: Red 14, Blue 10, Green 10, Yellow 5. In a pie chart, what angle does Yellow get?[2]
- 9.In a survey: Red 9, Blue 15, Green 6, Yellow 7. In a pie chart, what angle does Yellow get?[3]
- 10.In a survey: Red 2, Blue 13, Green 4, Yellow 3. In a pie chart, what angle does Green get?[3]
- 11.In a survey: Red 7, Blue 9, Green 6, Yellow 14. In a pie chart, what angle does Blue get?[3]
- 12.In a survey: Red 15, Blue 2, Green 13, Yellow 2. In a pie chart, what angle does Green get?[3]
Show answers and working
1. 87.6°
Total = 37. Yellow fraction = 9/37. 9/37 × 360° = 87.6°.
2. 48°
Total = 30. Green fraction = 4/30. 4/30 × 360° = 48°.
3. 58.1°
Total = 31. Yellow fraction = 5/31. 5/31 × 360° = 58.1°.
4. 84°
Total = 30. Green fraction = 7/30. 7/30 × 360° = 84°.
5. 122.9°
Total = 41. Green fraction = 14/41. 14/41 × 360° = 122.9°.
6. 105.9°
Total = 34. Yellow fraction = 10/34. 10/34 × 360° = 105.9°.
7. 128.6°
Total = 28. Blue fraction = 10/28. 10/28 × 360° = 128.6°.
8. 46.2°
Total = 39. Yellow fraction = 5/39. 5/39 × 360° = 46.2°.
9. 68.1°
Total = 37. Yellow fraction = 7/37. 7/37 × 360° = 68.1°.
10. 65.5°
Total = 22. Green fraction = 4/22. 4/22 × 360° = 65.5°.
11. 90°
Total = 36. Blue fraction = 9/36. 9/36 × 360° = 90°.
12. 146.3°
Total = 32. Green fraction = 13/32. 13/32 × 360° = 146.3°.
Worked examples
In a survey: Red 9, Blue 15, Green 10, Yellow 11. In a pie chart, what angle does Yellow get?
- Total = 45.
- Yellow fraction = 11/45.
- 11/45 × 360° = 88°.
- Answer: 88°
In a survey: Red 9, Blue 11, Green 11, Yellow 12. In a pie chart, what angle does Blue get?
- Total = 43.
- Blue fraction = 11/43.
- 11/43 × 360° = 92.1°.
- Answer: 92.1°
In a survey: Red 5, Blue 11, Green 13, Yellow 6. In a pie chart, what angle does Yellow get?
- Total = 35.
- Yellow fraction = 6/35.
- 6/35 × 360° = 61.7°.
- Answer: 61.7°
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
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- Start with Introduction to Introducing Sampling Essentials: Step-by-step Method, What is Introduction to Introducing Sampling Essentials, Data Presentation. Each one has its own free lesson, worksheet and quiz.
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