Roller Coaster

More info (and fun) for Workbook B Page 66 Question 2

How do rollercoasters work?

You may also read this: BBC Bitesize - How does a roller coaster work?

Wind energy

Can you build your own windmill? Well, he did!

Moving Windmills: The William Kamkwamba story

The Boy Who Harnessed The Wind | Netflix

Windmill in Singapore? Click to find out more.

We are a small, sheltered country with many restraints, and have very limited renewable energy options.