This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

In this design challenge, your child will create a parachute for a small toy using typical household items.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

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

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Test your friends to find out if you can replicate the placebo effect's incredible results.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

In this activity, your child will be challenged to make a tower using paper cups.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Examine the effect of pressure on carbonation in soda.

In this fun activity, your child will create their very own solar oven to bake s'mores!

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

In this activity your child will create their very own marble maze!