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LET'S EXPLORE How things work

Let's explore how things work

Using a bone needle to sew in the Stone AgeUsing a bone needle to sew in the Stone AgeWe use tools and machines to make our lives easier in some way. Using knowledge to create these tools and machines is called technology. Simple technology, dating back many thousands of years, enabled human beings to make fire, hunt animals and build shelters. Modern technology allows us to do an amazing range of things, such as communicating with people all over the world, building powerful engines and making major advances in medicine.

Using a saw, a simple machineUsing a saw, a simple machine


Machines are designed to perform tasks that we would find difficult or impossible to do without them. A saw is a simple machine. It is easy to cut through wood using a saw, but it is impossible to do so with your bare hands.

A computer is a much more complicated machine. It can do calculations that would take you a very long time in a fraction of a second.

Using a mechanical sawUsing a mechanical saw 

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