10+ Easy Science Fair Projects For Elementary School Students

It’s Science Fair Time and by the looks of my Facebook timeline, there are quite a few of us moms struggling to find cool and most importantly, easy science fair projects for our little ones! My oldest daughter loves science and whenever time permits, I try to let her try out various science experiments which she just loves. A little over a year ago, we got to try out our first Steve Spangler Science Kit and I’ve been a fan ever since! They have a TON of science experiments, project kits and science fair project supplies that are both really educational and really fun for the kids.

Steve Spangler and his team of award-winning teachers can also help you make your next science fair project a guaranteed success with their amazing science fair project kits, free science experiments and engaging how-to science project videos. The science projects they offer come at various difficulty levels, but are generally recommended for kids up to 8th grade. Below are just some of the coolest science fair projects they share on their site.

Science Fair Project Kits

Growing Bacteria Kit – using easy-to-make nutrient agar.

Kit includes:

6 large, 10 cm (3.5″) diameter Petri dishes
6 cotton swabs
5 grams of Nutrient Agar
600 mL plastic beaker
Activity guide

To make it into an actual science fair project, have your student introduce an independent variable to test. Here are some recommendations:

Door Knobs
- Start up question – Which door knob has the most bacteria?
- Variations to the independent variable: bathroom door knob, your bedroom door knob, your front door knob
Mouths
- Start up question – Which mouth is the cleanest?
- Variations to the independent variable: your mouth, your mom’s mouth, your teacher’s mouth, your dog’s mouth
Dental Care
- Start up question – How clean does my mouth really get?
- Variations to the independent variable: no brushing, brushing, brushing and mouth wash OR test different toothpastes – before brushing/after brushing with Colgate, before brushing/brushing with Crest, before brushing/brushing with Arm & Hammer, etc.

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Soda Powered Geyser Rocket Car

Kit includes:

1 Mentos Geyser Tube
3 interchangeable Geyser Tube caps (Fountain, Fan, and Run-Away)
1 Geyser Rocket Car frame
4 wheels
2 axels
2 Velcro straps
1 inflation pin
1 air blaster rubber stopper
1 solid rubber stopper
50g (1.76oz) of Citric Acid
50g (1.76oz) of Baking Soda
1 Mentos candy roll
Color, in-depth experiment and activity guide

Without a doubt, this is probably every kid’s favorite science experiment. I mean, a soda-powered car is not only fun, but it’s a great lesson in physics and motion too. It’s a really easy science project to put together and the kit allows for multiple different experiments to use as a demonstration.

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Baby Diaper Science Fair Kit

Kit includes:

2 Baby Diapers
Special Diaper Powder
Diaper Dissection Bags
Mixing Cups & Scoop
Detailed activity guide with science fair pointers

Science Project Idea:

Student will change the brand of diaper and test it to see just how much water it will absorb, comparing results to the absorbency of the first diaper tested. Be sure to use the same size of diaper even though you are using different brands. Have your student document those discoveries and share them at the science fair.

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Eating Nails for Breakfast Science Fair Kit

Kit Includes:

1 box of Total® cereal
1 box of Corn Flakes cereal
1 Strong magnet
2 Zipper-lock bags
Information packed activity guide

This is a super easy science fair project that would work for even Kindergartners. The purpose of it is to demonstrate the fact that that cereal contains iron. With the supplies in the kit, your student would test different cereals to see which cereal contains the most iron. Document the results and your child can share those discoveries at the science fair.