Offers ideas for science fair projects on selecting a topic, doing research, making a display and presenting the project. The suggested projects span a range of categories from astronomy to genetics, geology to engineering.

I: A guide to science fair projects -- The scientific method -- Topic research -- Categories -- Project research -- A sample project -- The project report -- The display -- Presentation and evaluation -- II: 50 science fair project ideas -- Astronomy -- Blackout (astronomy) -- Circling (astronomy) -- Biology -- Modified (anatomy) -- Human machine (anatomy) -- Blinkers (animal behavior) -- Climbers (botany) -- Inside and out (botany) -- Light seekers (plant behavior) -- Sampling (ecology) -- Nibblers (ecology) -- It takes two (genetics) -- Boy or girl (genetics) -- Floaters (microbiology) -- Bumpy (microbiology) -- Lub-dub (physiology) -- Instant flies (physiology) -- Fatty insulators (zoology) -- Reflectors (zoology) -- Earth science -- Easy flow (geology) -- Mapping (geology) -- Icy (meteorology) -- Dew drops (meteorology) -- Sun dried (oceanography) -- Squirter (oceanography) -- Warm up (paleontology) -- Imprints (paleontology) -- Recorder (seismology) -- Bang! (seismology) -- Lifter (volcanology) -- Slow mover (volcanology) -- Transformed (rocks) -- Rock record (fossils) -- Patterns (mineralogy) -- Collection (mineralogy) -- Engineering -- Supporters (engineering) -- Enlarger (engineering) -- Physical science -- Cleaning power (chemistry) -- Mixers (chemistry) -- Jerker (electricity) -- Attractive (electricity) -- Stretchy (energy) -- Spool racer (energy) -- Taller (gravity) -- Blowing bubbles (gravity) -- Toothy (machines) -- Flag raiser (machines) -- Eraser (magnetism) -- Demagnetize (magnetism) -- Mathematics -- Just alike (geometry) -- Three sided (geometry).