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What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

This science project teaches students to classify different shapes of leaves.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

In celebration of Earth Day, help your fifth grader write a poem from the Earth to its inhabitants.

This science project allows students to study the psychology of happiness.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Which do you prefer: real or artificial? Try this sweet little taste experiment to help your kids develop a better awareness of the food they consume.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.