experiências com a gravidade, o magnetismo, as cores, os sons etc.
Walking on Egg Shells and 25 other cool science projects - there are some cool ones! I'm gonna need this one day...
science of fire
Pumping Straw - a centrifugal pump
Ben Franklin and Electricity; static electricity, like charges repel one another and opposite charges attract one another, charging by conduction and charging by induction.
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.
treasure stones, simply add 1 cup flour,1 cup used coffee grounds (set them out overnight to dry), 1/2 cup salt 1/4 cup sand, 3/4 cup water, Small items, such as plastic toys, dice, and marbles, Nooks & Crannies thinks a real gemstone inside would be a fabulous find!!
science is super fun - a collection of crazy kids science experiments
How to keep a child busy for hours in the summer: DIY: Giant Ice Cube Awesomeness - filled with plastic animals, dinos, and such.
Make a solar oven with a recycled pizza box lined with aluminum foil