What is the BEST sciene experiment idea (for science fair) that only takes 1 day to experiment?
This is hard to answer given that I don’t know the age range for this project. I assume that there is a science fair rapidly approaching. There are a lot of projects that can be done quickly. There are many experiments with balloons, which seem like they would be easy to do. I also know that from school to school there are different definitions about what constitutes an experiment. You could quickly construct a maze out of cardboard, buy a mouse, and run it through a few times to see if the mouse gets fasted to get to the cheese.