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

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

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

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

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.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

The goal of this project is to create an exciting topographical map out of dough.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Learn all about balance and motion as your child designs a corn maze!

This science fair project idea experiments with spinning color wheels and optical illusions.