Hunkin’s Experiments has some cool science acitivites aimed at primary school age students.
“Cool cartoons that will have you experimenting with food, light, sound, clothes, and a whole lot more!! Hundreds of cartoon experiments from cartoonist, broadcaster and engineer Tim Hunkin.”
My personal fave: How to make a camera out of a baked bean tin
Australia’s Commonwealth Scientific Industrial Research Organisation (CSIRO) Science by Email is a weekly email newsletter featuring science news and activities.
Science by Email delivers the world’s best science direct to your inbox. It contains:
the latest science news
fun activities and experiments
SCOPE TV previews
the best science websites
Another science site for kids is Toys from Trash