It's time to roll up those sleeves and get a little dirty in the second lesson of this series on the science of food. Investigate where plants and animals get the minerals they need to live in this two-part exploration of soil. First,...

Do great gardeners really have green thumbs—or just really great soil? Environmental scholars discover what makes Earth's soil and soil quality so important through research and experimentation. Learners also develop an understanding of...

Groups of three scientists from the rocky planet Zog investigate the composition of soil so that they can take the information back to their home, create soil there, and begin to grow food.

Organic or mineral? How does the matter matter? Second graders use their knowledge of the rock cycle to label the different components in garden soil.

Seventy thousand different types of soil exist in the United States alone. Young scientists learn about the importance of soil to the food supply. They test soil for a variety of factors and determine the best place to set up a community...

It takes a strong foundation to build a house and a stronger one for a bridge. This resource presents the effects of geology and soil on bridge foundations. Working in groups, the class investigates the interaction of shallow and deep...

Young scientists roll up their sleeves and get a little dirty in this three-day earth science investigation. Following the scientific method, children monitor the growth of algae in pond water samples in order to determine...