MathsYears 12–13Pure Mathematics
Integration
Integrate functions; find definite integrals and areas under curves; integration by substitution and parts
What you'll learn
- 1
Integration is like adding up tiny slices to find the total area under a curve.
- 2
What does integration help us find?
- 3
Think of the area under this curve as lots of thin rectangles stacked together.
- 4
Integrate 2x from x=0 to x=3.
- 5
Drag the slider to add more rectangles under the curve — watch the area get more accurate!
- 6
What is the integral of 3x²?
- 7
If you integrate from x=1 to x=4, what do you do with the result?
Practise Integration with Whizlo
Free AI-tutored lessons, unlimited practice questions, and progress tracking for ages 16–18. Aligned to the UK National Curriculum.