Learn about many of instruments in the world in this book.'
The Greeks have been fighting the Trojans for ten years. They wondered how they will ever storm the wall city of Troy. Then they come up with a clever trick. Find out how the famous Trojan Horse changed the outcome of the war.
A science book about electricity
A science book about using the sun's energy.
A science book about heat, light and sound, discussing it's causes and effects.