Everybody knows that worms are good for the soil, but not everybody knows why. Here's a project that investigates just one of the ways earthworms improve the earth.

Plants need nitrogen to build proteins and nucleic acids to grow healthy stems and leaves. Though the Earth's atmosphere is made up of 79% nitrogen, the form of nitrogen found in the atmosphere cannot be used by plants. In this...

Humic acid is touted as an organic soil additive to improve plant growth by multiple means. Does it really work? Here's how you can find out.

Crown gall is a plant disease caused by the soil bacterium Agrobacterium tumefaciens. This project uses tomato plants to investigate whether garlic extract can prevent crown gall infection. Though this is a lengthy experiment, a...

[Free Registration/Login may be required to access all resource tools.] How soil is formed.

[Free Registration/Login may be required to access all resource tools.] How soil is formed.

[Free Registration/Login may be required to access all resource tools.] How soil is formed.

This program uses a scenario with fictional detective characters to present plant growth to students. While the unit focuses on the basic needs and parts of plants, the topics of plant classification and adaptations, soil formation and...

This site is an online science curriculum on how to grow plants on the Moon. There are six lessons that have a glossary also included. There are movies that demonstrate concepts, and teacher resources. The sites topics cover, the Earth,...

Follow these step-by-step instructions to create a cute little friend with real-growing hair made of grass and grass seeds.

A lesson plan that explores the importance of the slope of the soil to a soil's property. Understand how the soils slope affects many aspects of the property from the flow of water to planting.

Heidi lives in Norway. She notices that plants grow on land, but also underwater. Help her figure out other places that plants grow.

Download free curriculum with three modules on soil and plant science: elementary, middle, or high school. Each module includes hands-on investigations to help learners understand the importance of healthy soil and thriving plant...

Download free curriculum with three modules on soil and plant science: elementary, middle, or high school. Each module includes hands-on investigations to help learners understand the importance of healthy soil and thriving plant...

Plants need air, water, soil, and light to grow. Learners learn about plant growth and development by conducting an experiment that demonstrates the importance of light to plants.

In this lesson, students will understand that in order to grow healthy plants, soil, water, light, and air must be provided. Students will use math skills such as measurement and science process skills such as observation, comparing, and...

A lesson plan in which students explore plant communities and observe different types of soil and weather conditions in an attempt to determine cause and effect relationships. Includes discussion questions, extension activities and web...

Come along with the Agronauts and discover space in order to report back to Commander Spud Goodroot. Fun site provides all types of information about space science! Various missions include: 'What's In Our Sky?', 'The Root of the...

The Millenium Seed Bank is one of the Millenium Commission's National Landmark projects. Visit this site to learn how this project hopes to conserve seed samples.

This photo shows an artichoke plant sitting in a pot filled with nutrient rich soil.