That toy that can walk down the stairs all by itself has some pretty interesting science behind it. How does that thing work anyway? Take a look at these websites and videos to see the amazing slinky at work. And then go try some of this stuff – does your slinky follow the same scientific rules?
Microscopes and magnifying glasses are used to look at objects that are very, very small. The microscope and the magnifying glass magnifies the obeject so that a person can see it. To magnify means to make bigger. A microscope or a magnifying glass can magnify an object 10 times or 100 times or 1,000 times or more.