What are some good ideas for 3rd grade science fair projects?

Answer by  tamarawilhite (17883)

1. Build a model plate tectonics with food products / chemicals. 2. Show the water cycle in a three dimensional model.

Answer by  astamer (66)

Run a digital clock, where two polar nodes from the clock are placed in saltwater and the saltwater causes an electrical current - enough to make the clock run.

Answer by  Darry (3853)

What makes a plant grow best: water, vinegar, coffee, etc. What is most effective hand-washing soap (dirty hands in common product then wash with different soaps).

Answer by  senvi (19)

Your project can be based on a scientific experiment to show that if the mosquitoes are attracted for a certain blood type.