In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

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.

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 tests test whether the presence of spell check has changed standards for spelling.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

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

Future whistleblowers can learn about product safety standards with this exercise in writing and researching.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

A math project teaches students to use a clinometer to gauge the height of very tall objects like trees & to think of better ways to measure how high they are.

This project examines whether more expensive golf balls translate into better results on the golf course.

How much gas is released into your stomach by your favorite beverages? This project examines which beverages produce the most gas.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Learn about the field of psychophysics and to learn about "Just Noticeable Differences."

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

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

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.