5 Reasons to Teach Soil Science in Your Classroom

Soil is often overlooked as a classroom topic, yet it’s a fascinating and practical area of science to explore with one’s students. Whether you’re introducing elementary schoolers to the basics of earth science or tackling advanced environmental science concepts with high schoolers, soil science offers countless opportunities for hands-on learning with real-world applications. Here are five compelling reasons to incorporate soil science into your classroom curriculum.

But first: if you’re already on the hunt for great soil science teaching materials, I think you and your students will love my complete soil science unit. It includes directions for five soil lab activities, worksheets, readings, and engaging diagrams. Plus you’ll support this blog with your purchase!

Soil Science Unit: with 5 lab activities! Soil horizons, textures, porosity, permeability, & more!

1. Soil Science is an Interdisciplinary STEM Subject

One of the most exciting things about teaching soil science is its interdisciplinary nature. It bridges various STEM (Science, Technology, Engineering, and Math) fields, letting your students experience how scientific disciplines interconnect. For example, students will use math to calculate soil porosity and permeability and apply chemistry to analyze pH levels and organic matter content. Biology comes into play when learning about soil microorganisms! And even physics will come up when looking at how water moves through different soils.

Teaching soil science allows you to create lessons that naturally integrate multiple disciplines. For instance, you might try a lab where students add water to sandy and silty soils, calculate porosity, and graph their results. You can read my blog post about how to calculate porosity in your classroom! Activities like this, while simple, reinforce STEM skills!

2. Soils Impact Our Food, Water, Climate, and Ecosystems

Soil is so much more than just dirt! Soil is necessary for food production, water filtration, carbon storage, and ecosystem health. Teaching students about soil helps them understand the connections between soil and global challenges like food security and climate change.

For example, healthy soils are necessary to grow crops that feed Earth’s growing population. Soils also act as natural filters, purifying water as it percolates through its layers. Furthermore, soils tie into ecosystems and the climate, since they store carbon and other nutrients. Studying soil science is a great way to begin a discussion on sustainability and environmental conservation with your students.

3. Soil is Great for Hands-on Activities!

When you teach soil science, you’ll have the chance to try many hands-on learning activities with your students. For example, you could analyze soil textures – for example, by doing the soil textures “jar lab” I wrote previously about in my blog. The basic idea is this: students mix soil samples with water, shake them, and let the particles settle into layers of sand, silt, and clay. The larger, heavier particles settle out first, which lets your students observe the amount of sand, silt, and clay in the soil. This simple experiment visually demonstrates the concept of soil texture and allows students to connect theoretical knowledge with real-world observations.

Another activity is testing soils’ organic matter content. This activity relies on chemistry: when applied to soil, hydrogen peroxide reacts with organic matter, causing bubbling and fizzing. If you’d like to try this activity, you can find step-by-step directions in my blog post about detecting soil organic matter with hydrogen peroxide.

Truly, there’s no shortage of soil science experiments and activities to try. Additional options could include measuring soil pH levels and growing plants in different soil types to observe how soil composition impacts growth. These hands-on labs make lessons more interactive and also teach science skills like hypothesis testing and data collection.

4. Soil Knowledge is Useful in Many Career Paths

A little soil science knowledge goes a long way for students who dream of working outdoors or making a difference in the environment. Professions in agriculture, conservation, environmental science, land management, and urban planning all require a deep understanding of soil. Additionally, careers in engineering, hydrology, and ecology often intersect with soil science, offering even more opportunities for students with this foundational knowledge.

Introducing soil science in the classroom helps students see how their lessons could lead to fulfilling careers. You can highlight professionals who work in these fields, invite guest speakers, or assign projects where students explore soil-related careers. These activities provide opportunities to explore a variety of career paths for students who may not yet see how their classroom studies relate to their future goals.

Soil knowledge is key in many careers, including agriculture. Photo by Flambo on Pexels.com

5. Soil Science Gets Students Outside

Another great reason to teach soil science is the opportunity to take your class outdoors. No matter where you live, there’s soil to explore! Outdoor activities like digging into a local soil horizon, observing soil erosion, or starting a classroom composting project can help students apply their classroom knowledge to real-world observations.

Fieldwork can be as simple or elaborate as you want it to be. You might organize a short walk around your school grounds to collect soil samples or partner with a local park for a more in-depth study. Outdoor experiences are sure to enrich your soil lessons. Plus, they’re a great way to encourage physical activity and break up the monotony of a traditional classroom setting.

Teaching Soil Science in Your Classroom

If you’re an educator planning to teach soil science, great learning resources are key to deepening understanding! I think you and your students will love my complete Soil Science Unit (plus you’ll support my blog with your purchase!)