In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

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

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

This science fair project idea explores which fruit molds the fastest.

Slip some science into storm watching with a homemade rain gauge!

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

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.

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!

This biodiversity project examines the biodiversity in your own backyard.

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

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!

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

Determine if gender affects the ability to identify different smells.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.