This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

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

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

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

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

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

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.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

This science fair project idea examines the reason boats are shaped and engineered.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Challenge your learner to design and build a city of their own in this creative engineering activity.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.