In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Is your child a nature nut with an eye for creative, green-friendly projects? Introduce them to this amazing DIY bird feeder!

Using a glass fishbowl, you and your kids can create a low-humidity, open-topped terrarium perfect for easy care, drought-tolerant succulents.

Have your kid build an ice sculpture in this activity that's so fast, fun, and messy it's the perfect way to demonstrate how much fun experiments can be!

Help your child create a tasty treat that will demonstrate exactly how frogs survive a freezing season.

Think about the adaptive utility of an important aspect of our physiology.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

In this design challenge, your child will use building bricks to create a funny face. The activity instructions include question prompts thta can help guide your child through the creative process, and promote their problem-solving skills.

Determine the efficiency of multi-tasking by comparing how long it takes students to complete different tasks. Collate data, complete Summary Chart.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

Can cells be frozen? This science fair project provides information to answer this question.

Here's a fun activity to reinforce the physics concept of stored energy for your middle schooler.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

What colors can dogs see? Do they only have black and white vision, or can they see other colors too? Find out in this cool science experiment!

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

Check out this fun science project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

This experiment will examine and precisely measure the amount of sugar in various sodas.

This science fair project idea provides evidence that air is everywhere and takes up space.

This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.