A fact based look at some of the world's greatest inventions and how they work - from the electric lightbulb to the wind turbine. Brilliantly illustrated and with exciting quizzes, this book makes learning fun and facts easy to remember. Test your knowledge with the fun quizzes too!

• 100 numbered facts encourage children to read these books from start to finish

• Projects to make and do

• Hilarious facts and brilliantly drawn cartoons add an extra element of fun.