Science fair Top 10s
15 lists of ten. Each one says how it's ordered, and says plainly when the projects are ours.
- Top 10 science fair projects for 2nd gradersTen easy science fair projects for 2nd graders that test in a day or less, with things from home, each with a results table to print.
- Top 10 science fair projects for 4th gradersTen science fair projects for 4th graders with three trials, a mean and a graph, each with the hypothesis frame and a results table to print.
- Top 10 science fair projects for 7th and 8th gradersTen middle school science fair projects with a second variable to test, a mean for every level and a graph with two lines.
- Top 10 science fair projects you can finish in a weekendTen last-minute science fair projects that test in a day or two, leaving time to write it up and make the board.
- Top 10 science fair projects that cost nothingTen science fair projects that cost nothing if you have the usual kitchen and junk-drawer things, fewest things to gather first.
- Top 10 science fair projects about plants and weatherTen science fair projects about seeds, plants, sun, shade, rain and shadows, with a logbook for the days they take.
- Top 10 free science fair project sitesTen free places to find a science fair project or the rules for one, with what each does well, as we found them on 30 October 2026. Peabody is one of them.
- Top 10 mistakes on a science fair boardThe ten most common science fair display board mistakes, from a missing results table to a grown-up's words, and the fix for each.
- Top 10 things science fair judges askThe ten questions science fair judges ask, why each is asked, and a good answer at 2nd, 5th and 8th grade, from published judging procedures.
- Top 10 science fair rules every school sharesThe ten science fair safety and display rules elementary rule sets share, each with the rule set it comes from. Your school's sheet wins.
- Top 10 free graph makers for a science fairTen free graph makers for a science fair, from NCES Create a Graph to Google Sheets: what each does well and its catch, as we found them on 30 October 2026.
- Top 10 free science fair judging toolsTen free ways to run science fair judging, from judge sign-ups to scoring and the tally: what each does, its limits and what it costs after free. Two are ours.
- Top 10 science fair projects for kindergartenTen science fair projects made for kindergarten, done with a grown-up: an answer you count or see, eight steps at most, things from home.
- Top 10 science fair board ideasTen science fair board ideas that help a judge in four minutes: the question as the title, the results in the middle, a labelled graph, a child's own words.
- Top 10 science fair kits, honestly priced (with the free swap for each)Ten real science fair kits: what's in each, its price on the seller's page (31 October 2026), the catch, and a free project that asks the same question.
How these lists are made
Seven lists are our own projects, and each says so in its first line. Their order is a rule written in code (the shortest testing first, the best fit for the grade, the fewest things to gather), so when a project is added the lists change by themselves. The other eight are written by hand: the free project sites, the free graph makers and the free judging tools (ours are on them, named as ours; every other row is what that tool or site showed us on 30 October 2026), the mistakes we see on boards, the board ideas that help a judge, the questions judges ask, the rules schools share, each with the rule set it comes from, and ten kits with the price their seller showed on 31 October 2026 and a free project that asks the same question.
👨👩👧 For grown-ups and teachers: how much to help, the safety rules, and running a school fair. Science fair v0.16.1 · Checked .