Includes 3 complete The Young Scientist Club kits in one low-priced set! Kit 7 Minerals - In this kit Young Scientists become geologists and study the properties of minerals by using the streak test, hardness test, acid test, and magnetic test to identify five unknown minerals. A great introduction to real field science. Kit 8 Crystals - Young Scientists learn about crystals by growing a salt rock garden, rock candy, and string crystals. This kit is completed with a "bang" when Young Scientists break open real geodes and find beautiful crystals inside. Kit 9 Fossils - Young Scientists study fossils by making both cast and mold fossils of bugs and by examining the enclosed plant fossil replica. This kit is a great introduction to the fascinating field of paleontology. WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.