Whether you call it slime, flubber, oobleck, goo, goop, gak, gunk, ooze, putty, or play dough, we are talking about gooey, homemade polymers that can provide both hours of fun and an introduction to chemistry.
Despite the title, I don't think we're talking crafts for babies here, but rather toddlers and preschoolers.
Anne Marie Helmenstine, Ph.D. is About.com's chemistry guide. But you don't need a Ph.D. to follow her recipes for a bouncing polymer ball, electroactive slime, fake snot (eww!), Metamucil flubber, or glow-in-the-dark slime.
Non-Newtonian fluids sometimes behave like liquids and sometimes like solids, thereby defying easy categorization.
Normally I visit Cooks.com for dinner recipes, so I was pleasantly surprised to find that they also house dozens of recipes for slime, silly putty, goop, and play dough.
The Slime we made is just a demonstration of how certain polymers are effected by other chemicals, such as 'cross-linkers' .
M.C. Escher (1898-1972) was a Dutch illustrator known for his optical illusions, tessellated repeating patterns, and intricately detailed black-and-white images illustrating mathematical principals.
First thing you'll probably notice, is that this site is in Dutch.
Named after the image on a box of Droste brand chocolate, the Drost effect is a Dutch term for a recursive image that includes a picture of itself.
Among his [Escher's] greatest admirers were mathematicians, who recognized in his work an extraordinary visualization of mathematical principles.
Object 3 of 24. Created while Escher was still a student at the School for Architecture and Decorative Arts in Haarlem, this is the first print to demonstrate his theory of the regular division of a plane.
The Official M.C. Escher Website, published by the M.C. Escher Foundation, has a biography, a quotes page, six picture galleries, and a good Escher bibliography.
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