Tools make work easier
A tool is something we use to help us do a job. Many tools are simple machines. A simple machine does not need electricity — it just helps us push, pull or lift with less effort. Using the right tool makes work faster, safer and easier.
Key idea
Tools and simple machines help us do work using less effort.
Some tools we use
A lever, like a see-saw or a bottle opener, helps us lift or move things with a small push. A pulley helps us lift heavy things up high, like a flag on a flagpole. A ramp (inclined plane) makes it easier to move things up to a higher place. A wheel lets us move loads along the ground more easily. Scissors, a knife and a screwdriver are also useful tools at home and school.
Example
Opening a tin with your fingers is very hard. Using a tin opener, which is a lever, makes the same job easy.
Remember
- Tools help us do work with less effort.
- Levers, pulleys, ramps and wheels are simple machines.
- Always use tools carefully and safely.