Determine how good we are at direct and indirect observation.

Kindergarten algebra is a lot different than high school. In kindergarten math, algebra means grouping like things, or noticing what doesn't belong in a set.

This tactile activity helps kindergarteners learn about texture.

Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Teach your preschooler some physics that she can relate to with this fun and simple activity!

This science fair project idea shows how a vibrating object transfers energy to whatever it touches.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

In this science fair project on the relationship between distance and time, kids explore the behavior of gravitational acceleration through direct observation.

Science fair project that determines whether mass and weight are the same or different.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.

This science fair project idea explores whether a person's ability to see under very dim lighting conditions diminishes with age.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

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?

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

This experiment will explore whether fractals really repeat themselves infinitely.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.