Tin can phones offer something modern versions don't—a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.

Learn about the growing app design field by designing a new or improved app for smartphones.

In this design challenge, your child will create a parachute for a small toy using typical household items.

2011 VIRTUAL SCIENCE FAIR ENTRY: The objective of this science fair project is to develop a microcontroller and circuit that can conduct electricity.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this activity, your child will be challenged to make a tower using paper cups.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

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