Children's Zone is an ideal place for kids to explore science. You will discover the effect of surface tension from the colourful bubbles and soapy film you made from the Bubble Hoops. By pumping air into the liquid columns of Slow Bubbles, you will see that larger bubbles can catch up with smaller ones due to the greater upthrust. Try the Train Wheels. You will find that cone-shaped wheels, with their outer rims smaller than the inner one, are used to prevent derailing.