Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Research different measurement systems, design your own new or improved system that can measure something difficult to measure with traditional systems.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

This experiment will examine and precisely measure the amount of sugar in various sodas.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

Measure the porosity of rocks by submerging them in water. Measure how much water each rock "drank," by measuring the difference in water volume.

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

Science fair project that tests how well various sunscreens protect skin from the sunâs ultraviolet radiation by measuring their effect on sun-sensitive paper.

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

Science fair project which tests which antacids are most potent by measuring how well they neutralize the acid in lemon juice.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

This science fair project examines the different composition of fungi and plants.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

Here's an arts and crafts activity for preschoolers and pre-kindergarteners: build brick buildings with homemade mud bricks made from dirt and water.

The objective of this science project is to determine whether a sweet tooth is most likely an inherited trait or a learned behavior.

Making your own glass cleaner is easy, effective and inexpensive!

In this design challenge, students will be tasked with creating a bouncy ball polymer!