Class 4 EVS Chapter 7 How Things Work – Revision Notes

Quick revision notes for Class 4 EVS Chapter 7 (How Things Work). Ideal for a fast recap before exams.

Simple Machines Around Us

  • Levers, wheels, pulleys, and inclined planes make everyday tasks easier.

How a Lever Helps

  • A lever pivots around a fulcrum, letting a smaller force lift or move a heavier load.

Machines That Combine Parts

  • Objects like a bicycle combine multiple simple machines (wheels, axles, gears) together.

One-Line Summary

How Things Work introduces simple machines — levers, wheels, pulleys, inclined planes — that make everyday work easier.

Written by Satish

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