7th grade science project idea
Explore which teeth-whitening products work best - Whitestrips or Whitetrays.
This project compares the strength of one, two, and three-ply toilet paper.
Can you stain teeth with tea, coffee, or coke? Explore how in this science fair project idea.
see whether all liquids evaporate at the same rate. In other words, does water evaporate at the same rate as juice?