Scientific American features a fun, new, science-related activity every Thursday that parents and their six- to 12-year-olds can do together. Adults will find easy-to-follow instructions and simple materials lists as well as additional background to help them explain the key concepts.
Simple Activities for Little Engineers | via Inner Child Fun -- Do your kids enjoy solving problems and figuring out how things work?
enough to heat a garage.....this site tells you how to do it with soda cans ... heat a greenhouse. Dog houses in the winter?