Earth Science
Ellen J. McHenry
Biology
Genetics
Create a Baby Alien (genotype and phenotype activity)
Ellen J. McHenry
Botany in 8 Lessons
Free Animal Science and Microbiology Downloads
Free Botany Downloads
Free Human Body Downloads
A year of Human Body science from Guest Hollow
Chemistry
Ellen J. McHenry
The Elements
Free Chemistry Downloads
Projects
Mixing & Measuring
Density of Fluids (Lava in a Cup)
Surface Tension of Water (Floating Paper Clip Experiment)
Salt: Salt Sculptures. Use toothpicks and gumdrops / marshmallows to create the crystalline structure of Salt.
Magic Potion Station (vinegar, baking soda, food coloring)
Green Pennies
Excel and PDF versions of the Periodic Table
Physics
Ellen J. McHenry
Free Physics Downloads. These are labeled for ages 10-14, but the projects are fun to do with younger kids as well.
Projects
Build a catapult from dowels or pencils, or from skewers and marshmallows.
Eclectic Ed 