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.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

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.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

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

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

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

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Test whether plants can grow without sunlight and water.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

This science fair project idea demonstrates that plants give off water.