Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

In this science fair project, students make their own rain gauge to measure rainfall.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

Test your skills as a weather forecaster, and learn some science terms on the way!

Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.

Can you think of a way of cleaning dirty water using the sun? In this activity, you will be making a "solar still" that is able to do just that!

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this experiment, your middle schooler will chart the effects of oil on a feather in order to grasp the tragic effects of oil spills on wildlife.

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

Here's how you and your teen can stage your own formal debateâbeyond arguing why chores are unethical! Formal debates improve teens' critical thinking skills.

Here's a guide to starting a community clean-up project from scratch.