Top Science Fair Project Ideas for 3rd Grade

1. Growing Crystals: Observe how different substances form crystals.

[{"selector":"#anim-5cf52181-617c-4d07-8e35-31b2f59d1b15","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d2347ad4-2998-4d27-b934-264f68f81fc2","keyframes":{"transform":["translate3d(-115.33547%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

2. Solar System Model: Build a scale model of our solar system.

[{"selector":"#anim-abd1c52b-3b0e-436f-bc94-7d8c2c79d4d3","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4bddf4e5-c5d6-4ba2-bf4e-91e7d6f17e98","keyframes":{"transform":["translate3d(-115.33547%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

3. Plant Growth Experiment: Investigate factors affecting plant growth.

[{"selector":"#anim-0cd972a4-da0b-4a9b-8e89-3ca42cd9b806","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-088052cd-e997-4d83-81a2-b02645bbd14b","keyframes":{"transform":["translate3d(-115.97444%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

4. Magnet Exploration: Explore the properties of magnets.

[{"selector":"#anim-d461d457-2ded-4f69-9329-14fbfbee2995","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-99d8e830-e99d-4f1e-9770-6f1d23c55ed7","keyframes":{"transform":["translate3d(-115.97444%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

5. Density Tower: Create a colorful tower showcasing density differences.

[{"selector":"#anim-7eb41b44-20c8-4990-ad2b-843656fa1b1d","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-922353c8-78fd-4922-9c45-f05b692d3613","keyframes":{"transform":["translate3d(-115.33547%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

6. Rain Gauge Construction: Make a rain gauge to measure rainfall.

[{"selector":"#anim-18a512e9-981d-4d2c-99d7-539762f5d06f","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c8ca0d5b-9bf5-4830-9086-9c2a9d421dd3","keyframes":{"transform":["translate3d(-116.29393%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

7. Eggshell Geodes: Create geode-like structures using eggshells.

[{"selector":"#anim-20978561-2431-4516-8d08-5ffe36a2b0e2","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1f8ae918-975b-432d-9cae-1a3a55801214","keyframes":{"transform":["translate3d(-116.29393%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

8. Balloon Rocket Race: Test how different variables affect balloon rockets.

[{"selector":"#anim-d064304a-4969-4ee7-8450-4f8eb8af8578","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5f64b575-854d-49ef-aa4c-6791c2e2aa14","keyframes":{"transform":["translate3d(-115.33547%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

9. Static Electricity Show: Explore static electricity with simple experiments.

[{"selector":"#anim-6a7e35cd-3a58-441a-a67a-83386ea60424","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e94ce585-101b-482b-957b-7dc8f6ed5a4b","keyframes":{"transform":["translate3d(-115.97444%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

10. Pulley Systems: Build and test different pulley setups for lifting objects.

[{"selector":"#anim-4088438a-3da7-4fa3-9519-346149466f9a","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0755456e-1de1-40b5-b993-c907173268f6","keyframes":{"transform":["translate3d(-115.33547%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]