Science fair projects for 7th grade

What to expect

Seventh grade is often the first fair that's judged like a high school one. The way up is a second variable: once the first test is done, change a second thing and run it again, so the graph has two lines and the conclusion can compare them. Every project on this page has a Going further line that says what that second test is.

Seventh graders should also say how sure they are. Three tries that land close together mean more than three that are all over the place, and pointing that out ("my three tries were within 2 cm of each other") is the kind of thing a judge remembers. Keep the logbook as you go, and write the procedure so somebody else could repeat it exactly.

Counted from the projects on this page: 29 about how things move, 19 about water, ice and mixing, 19 about growing and weather; 25 using kitchen things, 26 using paper, tape and toys, 16 using the outdoors and some seeds. 42 are free with what most houses have, and the rest cost about $1 or about $2 or about $3 or about $4. Testing takes from 1 to 21 days. 12 have a step a grown-up does, marked on the page.