The POOF-Slinky 1140 Slinky Science Slippery Slimes Kit teaches you about the different properties and the science of slime that you"ll find useful and fun when you create (2) different kinds of gooey ooze with the contents of this kit. Discover what a "polymer" is and how molecules link up to make slimy things. The (2) fun and safe activities in this kit provide step-by-step directions how to make "Sewer Slime", a thicker slime that"s portrayed in classic movies and "Flip-Flop Slime", substance that can"t decide whether it wants to be a solid or a liquid. Once done, you should have enough materials to do additional experiments. Based on what you learned from the (2) activities, you should be able to make educated guesses about the effects of changing the recipes to create a slime of your own. The Slippery Slimes Kit includes a spoon, bag of borax, bag of guar gum, bag of cornstarch and instruction booklet. This Slinky Science experiment is number 179 of a series of science kits that combine the elements of learning and fun to provide hours of educational entertainment. The POOF-Slinky 1140 Slinky Science Slippery Slimes Kit is recommended for children 8-years of age and older. POOF-Slinky is the manufacturer of the world famous Slinky and the top selling POOF foam sport balls in North America, both manufactured in Plymouth, MI and Hollidaysburg, PA. Ideal and Scientific Explorer are other well-known brands, rounding out the POOF-Slinky family. With roots in the toy industry for over 100-years, POOF-Slinky brands continue to grow and broaden. New generations of kids, their parents and grandparents have proven that classic toys never go out of style!