Then, turn it into an experiment by applying the theory to other fruits or vegetables to see if you can get similar results. Learn how to extract DNA from an onion (most of what you need you can find at home, and you can get 95% ethanol at Amazon). 7th Grade Science Classroom Demos, Experiments, and Hands-On Activitiesīiology and Ecology Science Fair Ideas for 7th Grade.Physics and Engineering Science Fair Ideas for 7th Grade.Chemistry Science Fair Ideas for 7th Grade.Biology and Ecology Science Fair Ideas for 7th Grade.Advanced: These require specialized or more expensive supplies to complete.Medium: Items that you might not already have but are easy to get your hands on.Basic: Simple items you probably already have around the house.Advanced: Experiments like these take a fairly big commitment of time or effort.Medium: These take a little more setup or a longer time to complete.Easy: Low or no-prep experiments you can do pretty much anytime.To make it easier to find classroom activities or science fair ideas for 7th grade, we’ve rated all the projects by difficulty and the materials needed: Plus, find interesting classroom demos, experiments, and hands-on activities to spice up your lesson plans! Engage every student with these 7th grade science fair projects, whether they’re interested in biology, chemistry, physics, environmental science, or any other discipline.
