What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

The meaning of Thanksgiving can sometimes get lost among the fun of food and family. Discuss the meaning of Thanksgiving with this fun activity.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This game reinforces the meaning of the term "multiples" and is fast enough to hold the attention of your fourth-grader.

The project determines determine if a sports drink affects the heart rate of a student athlete during exercise.

This science fair project idea identifies trees using a dichotomous key.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

Compare fractions in this two-player math game. The objective of the games is to work together to determine who has created the largest fraction.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

This science fair project has kids conduct a blindfolded taste test to determine how smell influences our ability to taste foods.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

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.

Introduce your fourth or fifth grader to volume by having him build rectangular prisms, and then count each sugar cube to check his volume calculations.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Vincent van Gogh painted golden hued pictures of the harvest using bold lines and vibrant color. Your child can explore this style of art using oil pastels.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Using only straight-line sewing, your fourth can create a nifty felt pencil case perfect for his busy life.

In this project students experiment with making music using only glasses of water.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

Construct and experiment with a periscope using reflected light rays to gather an image.