Free Grade 3 Nets in Context Lesson Plans
Free Grade 3 lesson plans for Nets in Context: 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
Stretch
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain nets in context
Explain nets in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate nets in context
Calculate nets in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare nets in context
Compare nets in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify nets in context
Justify nets in context 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 Nets in Context 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 2 cm × 2 cm × 8 cm.[1]
- 2.Find the volume of a cuboid 6 cm × 10 cm × 6 cm.[1]
- 3.Find the volume of a cuboid 6 cm × 9 cm × 8 cm.[1]
- 4.Find the volume of a cuboid 9 cm × 8 cm × 3 cm.[1]
- 5.Find the volume of a cuboid 3 cm × 4 cm × 2 cm.[2]
- 6.Find the volume of a cuboid 3 cm × 3 cm × 7 cm.[2]
- 7.Find the volume of a cuboid 10 cm × 8 cm × 4 cm.[2]
- 8.Find the volume of a cuboid 5 cm × 10 cm × 5 cm.[2]
- 9.Find the surface area of a cuboid 6 cm × 9 cm × 10 cm.[3]
- 10.Find the surface area of a cuboid 10 cm × 6 cm × 10 cm.[3]
- 11.Find the surface area of a cuboid 8 cm × 5 cm × 3 cm.[3]
- 12.Find the surface area of a cuboid 6 cm × 3 cm × 6 cm.[3]
Show answers and working
1. 32 cm³
Volume = length × width × height. 2 × 2 × 8 = 32 cm³.
2. 360 cm³
Volume = length × width × height. 6 × 10 × 6 = 360 cm³.
3. 432 cm³
Volume = length × width × height. 6 × 9 × 8 = 432 cm³.
4. 216 cm³
Volume = length × width × height. 9 × 8 × 3 = 216 cm³.
5. 24 cm³
Volume = length × width × height. 3 × 4 × 2 = 24 cm³.
6. 63 cm³
Volume = length × width × height. 3 × 3 × 7 = 63 cm³.
7. 320 cm³
Volume = length × width × height. 10 × 8 × 4 = 320 cm³.
8. 250 cm³
Volume = length × width × height. 5 × 10 × 5 = 250 cm³.
9. 408 cm²
Three pairs of faces: 54, 90, 60. 2 × (54 + 90 + 60) = 408 cm².
10. 440 cm²
Three pairs of faces: 60, 60, 100. 2 × (60 + 60 + 100) = 440 cm².
11. 158 cm²
Three pairs of faces: 40, 15, 24. 2 × (40 + 15 + 24) = 158 cm².
12. 144 cm²
Three pairs of faces: 18, 18, 36. 2 × (18 + 18 + 36) = 144 cm².
Worked examples
Find the volume of a cuboid 8 cm × 10 cm × 5 cm.
- Volume = length × width × height.
- 8 × 10 × 5 = 400 cm³.
- Answer: 400 cm³
Find the volume of a cuboid 7 cm × 8 cm × 8 cm.
- Volume = length × width × height.
- 7 × 8 × 8 = 448 cm³.
- Answer: 448 cm³
Find the surface area of a cuboid 10 cm × 2 cm × 7 cm.
- Three pairs of faces: 20, 14, 70.
- 2 × (20 + 14 + 70) = 208 cm².
- Answer: 208 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
How mastery is evidenced, and which standards it maps to.
Every free resource for Nets in Context
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Learn — Meet the idea.
Practice — Build fluency.
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Frequently asked
- Is this Grade 3 Nets in Context 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 Nets, Introducing Nets, Perimeter and Area. 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 Nets in Context?
- Move on to Surface Area, Volume of Prisms, Volume of Cylinders, Volume of Spheres, which build directly on this idea.
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