Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

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.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Take a dive into the candy jar with this yummy science experiment.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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

Make a planter full of delicious seasonings and classic grilling vegetables, great for a Fatherâs Day gift or a fun start-of-summer outdoor activity.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

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.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

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