Does mass change when water freezes? What is the source of the gas in a seltzer tablet? Find out in your own lab! Readers learn how to make their own laboratory with simple materials and household items. Then it's time to start experimenting! Step-by-step directions help you conduct your own experiments and test hypotheses. Perfect for the science fair!

Ever wonder how flutes, harps, guitars, pianos, or drums produce sound? Find out by building your own musical instruments! Using supplies and tools that are easy to find, you can experiment with frequency, vibration, harmonics, and more-all with homemade instruments. Follow the suggestions for expanding the ideas to develop your own unique science fair project!