Free Grade 3 Working with Introducing Nets Common Errors: Visual Models Lesson Plans
Free Grade 3 lesson plans for Working with Introducing Nets Common Errors: Visual Models: 12 real questions with a full answer key and worked solutions. Volume is how much space a 3D shape takes up. For a cuboid, multiply length × width × height. Surface area is the total area of all faces.
Free
Higher
15 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with introducing nets common errors: visual models
Identify working with introducing nets common errors: visual models accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with introducing nets common errors: visual models
Explain working with introducing nets common errors: visual models accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing nets common errors: visual models
Calculate working with introducing nets common errors: visual models accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing nets common errors: visual models
Compare working with introducing nets common errors: visual models 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 Nets Common Errors: Visual Models works
Volume is how much space a 3D shape takes up. For a cuboid, multiply length × width × height. Surface area is the total area of all faces.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.Find the volume of a cuboid 9 cm × 8 cm × 3 cm.[1]
- 2.Find the volume of a cuboid 4 cm × 4 cm × 5 cm.[1]
- 3.Find the volume of a cuboid 8 cm × 10 cm × 4 cm.[1]
- 4.Find the volume of a cuboid 6 cm × 5 cm × 3 cm.[1]
- 5.Find the volume of a cuboid 2 cm × 6 cm × 5 cm.[2]
- 6.Find the volume of a cuboid 4 cm × 6 cm × 5 cm.[2]
- 7.Find the volume of a cuboid 10 cm × 4 cm × 8 cm.[2]
- 8.Find the volume of a cuboid 2 cm × 2 cm × 6 cm.[2]
- 9.Find the surface area of a cuboid 4 cm × 6 cm × 4 cm.[3]
- 10.Find the surface area of a cuboid 6 cm × 8 cm × 9 cm.[3]
- 11.Find the surface area of a cuboid 2 cm × 2 cm × 4 cm.[3]
- 12.Find the surface area of a cuboid 4 cm × 2 cm × 7 cm.[3]
Show answers and working
1. 216 cm³
Volume = length × width × height. 9 × 8 × 3 = 216 cm³.
2. 80 cm³
Volume = length × width × height. 4 × 4 × 5 = 80 cm³.
3. 320 cm³
Volume = length × width × height. 8 × 10 × 4 = 320 cm³.
4. 90 cm³
Volume = length × width × height. 6 × 5 × 3 = 90 cm³.
5. 60 cm³
Volume = length × width × height. 2 × 6 × 5 = 60 cm³.
6. 120 cm³
Volume = length × width × height. 4 × 6 × 5 = 120 cm³.
7. 320 cm³
Volume = length × width × height. 10 × 4 × 8 = 320 cm³.
8. 24 cm³
Volume = length × width × height. 2 × 2 × 6 = 24 cm³.
9. 128 cm²
Three pairs of faces: 24, 24, 16. 2 × (24 + 24 + 16) = 128 cm².
10. 348 cm²
Three pairs of faces: 48, 72, 54. 2 × (48 + 72 + 54) = 348 cm².
11. 40 cm²
Three pairs of faces: 4, 8, 8. 2 × (4 + 8 + 8) = 40 cm².
12. 100 cm²
Three pairs of faces: 8, 14, 28. 2 × (8 + 14 + 28) = 100 cm².
Worked examples
Find the volume of a cuboid 6 cm × 6 cm × 6 cm.
- Volume = length × width × height.
- 6 × 6 × 6 = 216 cm³.
- Answer: 216 cm³
Find the volume of a cuboid 10 cm × 10 cm × 6 cm.
- Volume = length × width × height.
- 10 × 10 × 6 = 600 cm³.
- Answer: 600 cm³
Find the surface area of a cuboid 5 cm × 6 cm × 9 cm.
- Three pairs of faces: 30, 54, 45.
- 2 × (30 + 54 + 45) = 258 cm².
- Answer: 258 cm²
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Adds the dimensions instead of multiplying.
Correction: Volume = l × w × h.
Counts only three faces for surface area.
Correction: A cuboid has six faces — three matching pairs.
Teacher tips
- · Build cuboids from cubes before using the formula.
Parent tips
- · Work out how many sugar cubes fit in a box.
Real-life applications
- · Filling a fish tank, wrapping a present.
Assessment objectives
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Frequently asked
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- Start with Working with Introducing Nets Common Errors: Worked Examples, Working with Introducing Nets Common Errors: Step-by-step Method, Rules and Methods in Introducing Nets Common Errors. Each one has its own free lesson, worksheet and quiz.
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- Move on to Working with Introducing Nets Common Errors: Common Mistakes, Working with Introducing Nets Common Errors: Real-life Applications, Introduction to Introducing Nets Common Errors, Key Vocabulary of Introducing Nets Common Errors, which build directly on this idea.
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