Commonly associated with classroom blackboards and sidewalk art, chalk can also be used to repel ants from invading your home, lift grease stains from clothes, prevent your tools from rusting, and hide your wall scrapes and nicks in a pinch.
How to produce strange noises using your mouth and throat. Guttural Noises
Math Craft admin Cory Poole provided quite a few recipes for sonobe models in his blog, and I followed one to make the pentakis dodecahedron here.
Camera manufacturers release new versions of the same cameras, mostly point-and-shoot models, as frequently as Detroit's auto industry upgrades minivans. They also add new lenses regularly, upgrading previous models with adjusted zoom ranges or the image stabilization feature. The same goes for tripods, portable flashes and even camera bags.
