Free Grade 3 Working with Introducing Sampling Essentials: Step-by-step Method — Application Lesson Plans
Free Grade 3 lesson plans for Working with Introducing Sampling Essentials: Step-by-step Method — Application: 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 working with introducing sampling essentials: step-by-step method — application
Identify working with introducing sampling essentials: step-by-step method — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with introducing sampling essentials: step-by-step method — application
Explain working with introducing sampling essentials: step-by-step method — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing sampling essentials: step-by-step method — application
Calculate working with introducing sampling essentials: step-by-step method — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing sampling essentials: step-by-step method — application
Compare working with introducing sampling essentials: step-by-step method — application 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: Step-by-step Method — Application 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 2, Blue 3, Green 13, Yellow 6. In a pie chart, what angle does Red get?[1]
- 2.In a survey: Red 11, Blue 4, Green 2, Yellow 3. In a pie chart, what angle does Blue get?[1]
- 3.In a survey: Red 4, Blue 5, Green 7, Yellow 6. In a pie chart, what angle does Blue get?[1]
- 4.In a survey: Red 14, Blue 5, Green 14, Yellow 15. In a pie chart, what angle does Red get?[1]
- 5.In a survey: Red 9, Blue 3, Green 8, Yellow 9. In a pie chart, what angle does Red get?[2]
- 6.In a survey: Red 15, Blue 13, Green 12, Yellow 3. In a pie chart, what angle does Yellow get?[2]
- 7.In a survey: Red 5, Blue 4, Green 14, Yellow 10. In a pie chart, what angle does Green get?[2]
- 8.In a survey: Red 6, Blue 15, Green 4, Yellow 7. In a pie chart, what angle does Blue get?[2]
- 9.In a survey: Red 8, Blue 2, Green 6, Yellow 11. In a pie chart, what angle does Green get?[3]
- 10.In a survey: Red 8, Blue 14, Green 14, Yellow 12. In a pie chart, what angle does Green get?[3]
- 11.In a survey: Red 8, Blue 13, Green 6, Yellow 7. In a pie chart, what angle does Yellow get?[3]
- 12.In a survey: Red 7, Blue 11, Green 14, Yellow 11. In a pie chart, what angle does Blue get?[3]
Show answers and working
1. 30°
Total = 24. Red fraction = 2/24. 2/24 × 360° = 30°.
2. 72°
Total = 20. Blue fraction = 4/20. 4/20 × 360° = 72°.
3. 81.8°
Total = 22. Blue fraction = 5/22. 5/22 × 360° = 81.8°.
4. 105°
Total = 48. Red fraction = 14/48. 14/48 × 360° = 105°.
5. 111.7°
Total = 29. Red fraction = 9/29. 9/29 × 360° = 111.7°.
6. 25.1°
Total = 43. Yellow fraction = 3/43. 3/43 × 360° = 25.1°.
7. 152.7°
Total = 33. Green fraction = 14/33. 14/33 × 360° = 152.7°.
8. 168.8°
Total = 32. Blue fraction = 15/32. 15/32 × 360° = 168.8°.
9. 80°
Total = 27. Green fraction = 6/27. 6/27 × 360° = 80°.
10. 105°
Total = 48. Green fraction = 14/48. 14/48 × 360° = 105°.
11. 74.1°
Total = 34. Yellow fraction = 7/34. 7/34 × 360° = 74.1°.
12. 92.1°
Total = 43. Blue fraction = 11/43. 11/43 × 360° = 92.1°.
Worked examples
In a survey: Red 15, Blue 7, Green 14, Yellow 9. In a pie chart, what angle does Red get?
- Total = 45.
- Red fraction = 15/45.
- 15/45 × 360° = 120°.
- Answer: 120°
In a survey: Red 12, Blue 2, Green 6, Yellow 2. In a pie chart, what angle does Red get?
- Total = 22.
- Red fraction = 12/22.
- 12/22 × 360° = 196.4°.
- Answer: 196.4°
In a survey: Red 12, Blue 13, Green 3, Yellow 8. In a pie chart, what angle does Red get?
- Total = 36.
- Red fraction = 12/36.
- 12/36 × 360° = 120°.
- Answer: 120°
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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