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2. Read the following text about simple and complex machines.
Simple machines are based on just one element.
A lever, an inclined plane, a wedge and a screw are examples of simple machines.
Complex machines are formed by two or more simple machines.
For example a wheelbarrow, a bicycle or a car are examples of complex machines.
3. Classify the following machines into SIMPLE MACHINES or COMPLEX MACHINES. Do this activity in your notebook.
lever - wheelbarrow - camera - bicycle - inclined plane - car stapler - scissors - washing machine - shovel - toaster - screw fridge - hairdryer - pulley - lorry - television