Now, each school is different and nothing guarantees a first place science fair win. But I am happy to share the girls' third grade science fair project idea and basic steps. The project was based on their fall science curriculum, which may have earned bonus points with the judges. The project was controlled and fully documented in the science fair project log. In addition, their board was attractive and neat.
Stupendous Soil Absorption
(that happened to win first place!)
a third grade science fair project
Please keep in mind that these are basic steps. Don't simply copy; make sure your child learns something as they work!