Free Grade 3 Introducing Reverse Differentiation Techniques Lesson Plans
Free Grade 3 lesson plans for Introducing Reverse Differentiation Techniques: 12 real questions with a full answer key and worked solutions. Differentiation finds the rate of change (the gradient) of a curve. For axⁿ, the derivative is naxⁿ⁻¹.
Free
Foundation
25 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify introducing reverse differentiation techniques
Identify introducing reverse differentiation techniques accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain introducing reverse differentiation techniques
Explain introducing reverse differentiation techniques accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing reverse differentiation techniques
Calculate introducing reverse differentiation techniques accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing reverse differentiation techniques
Compare introducing reverse differentiation techniques 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 Introducing Reverse Differentiation Techniques works
Differentiation finds the rate of change (the gradient) of a curve. For axⁿ, the derivative is naxⁿ⁻¹.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.Differentiate y = 6x^4 + 4x.[1]
- 2.Differentiate y = 5x^2 + 2x.[1]
- 3.Differentiate y = 4x^2 + 4x.[1]
- 4.Differentiate y = 1x^5 + 4x.[1]
- 5.Differentiate y = 2x^4 + 2x.[2]
- 6.Differentiate y = 1x^2 + 5x.[2]
- 7.Differentiate y = 3x^4 + 7x.[2]
- 8.Differentiate y = 1x^4 + 4x.[2]
- 9.Find the gradient of y = 2x^5 + 8x at x = 1.[3]
- 10.Find the gradient of y = 3x^4 + 5x at x = 1.[3]
- 11.Find the gradient of y = 1x^3 + 6x at x = 1.[3]
- 12.Find the gradient of y = 5x^4 + 5x at x = 1.[3]
Show answers and working
1. dy/dx = 24x^3 + 4
Multiply by the power, then reduce the power by 1. 6x^4 → 24x^3; 4x → 4.
2. dy/dx = 10x^1 + 2
Multiply by the power, then reduce the power by 1. 5x^2 → 10x^1; 2x → 2.
3. dy/dx = 8x^1 + 4
Multiply by the power, then reduce the power by 1. 4x^2 → 8x^1; 4x → 4.
4. dy/dx = 5x^4 + 4
Multiply by the power, then reduce the power by 1. 1x^5 → 5x^4; 4x → 4.
5. dy/dx = 8x^3 + 2
Multiply by the power, then reduce the power by 1. 2x^4 → 8x^3; 2x → 2.
6. dy/dx = 2x^1 + 5
Multiply by the power, then reduce the power by 1. 1x^2 → 2x^1; 5x → 5.
7. dy/dx = 12x^3 + 7
Multiply by the power, then reduce the power by 1. 3x^4 → 12x^3; 7x → 7.
8. dy/dx = 4x^3 + 4
Multiply by the power, then reduce the power by 1. 1x^4 → 4x^3; 4x → 4.
9. 18
dy/dx = 10x^4 + 8. At x = 1: 10 × 1 + 8 = 18.
10. 17
dy/dx = 12x^3 + 5. At x = 1: 12 × 1 + 5 = 17.
11. 9
dy/dx = 3x^2 + 6. At x = 1: 3 × 1 + 6 = 9.
12. 25
dy/dx = 20x^3 + 5. At x = 1: 20 × 1 + 5 = 25.
Worked examples
Differentiate y = 4x^2 + 5x.
- Multiply by the power, then reduce the power by 1.
- 4x^2 → 8x^1; 5x → 5.
- Answer: dy/dx = 8x^1 + 5
Differentiate y = 5x^5 + 4x.
- Multiply by the power, then reduce the power by 1.
- 5x^5 → 25x^4; 4x → 4.
- Answer: dy/dx = 25x^4 + 4
Find the gradient of y = 1x^5 + 1x at x = 2.
- dy/dx = 5x^4 + 1.
- At x = 2: 5 × 16 + 1 = 81.
- Answer: 81
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Forgets that a constant differentiates to 0.
Correction: Constants have zero gradient.
Reduces the power but forgets to multiply by it.
Correction: Multiply by the power, then reduce it by 1.
Teacher tips
- · Link to gradients of straight lines first.
Parent tips
- · Ask how speed relates to distance over time.
Real-life applications
- · Speed from distance, maximising profit.
Assessment objectives
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Frequently asked
- Is this Grade 3 Introducing Reverse Differentiation Techniques 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 Introducing Reverse Differentiation Essentials, Differentiation. 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 Introducing Reverse Differentiation Techniques?
- Move on to Introducing Reverse Differentiation Word Problems, Introducing Reverse Differentiation Common Errors, Working with Reverse Differentiation, Reverse Differentiation in Context, which build directly on this idea.
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