Learning goals
- the learner can explain what a simple machine does in their own words
- the learner can name all six types of simple machines
- the learner can give one real-world example of each type
- the learner can distinguish between the effort force they apply and the load the machine moves
Key ideas
Simple machine
A simple machine is a basic tool with few or no moving parts that helps you do work with less effort.
Force
Force is a push or a pull — it is what you apply to a machine to make it do something.
Work
In science, work happens when a force moves an object over a distance.
The six simple machines
The six types are the lever, wheel and axle, pulley, inclined plane, wedge, and screw.
Hands-on activity
Simple Machine Scavenger Hunt
Paper and pencilA home or outdoor area to explore
- Write the six simple machine names as column headers on a sheet of paper.
- Walk through two or three rooms — kitchen, garage, or outside — and look for objects that match each type.
- Write down each item you find under the correct column (examples: doorknob = wheel and axle, ramp at the driveway = inclined plane, scissors = two levers).
- Circle the simple machine your family uses most and talk about why it is so handy.
- Challenge: see if you can find at least one example for every type before time is up.
Teaching tips
- Before the lesson, gather two or three real objects to hold up — a pair of scissors, a ramp-shaped book wedge, and a screwdriver work well.
- Children often confuse 'work' in everyday speech with the scientific definition; spend a moment on the distinction so the vocabulary sticks.
- Keep the scavenger hunt lighthearted — the goal is pattern recognition, not perfection.