Science Lesson: Soil Health and Agriculture
Lesson Plan
1 hour 10 minutesGrades6, 7, 8Science
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Written by Yen-Yen Chiu
About this lesson
Students investigate how soil health supports ecosystems and food production, examine soil samples, and use evidence to compare healthy and unhealthy soils. Students connect these observations to real-world challenges, considering how extreme weather, climate change, and human activity affect soil and brainstorm ways to improve it.
Inquire: Students discuss why healthy soil matters, explore local examples of extreme weather impacts, and watch a brief video to spark curiosity.
Investigate: Students analyze soil samples, learn about soil organisms, and make evidence-based conclusions about soil health.
Inspire: Students reflect on the importance of soil health, identify a local soil problem they would like to solve, and propose ideas to improve soil in their community.
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Everything you need to teach it
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Suggestions
- Teachers can invite local farmers or people in agriculture to bring in samples of soil and explain soil health on their farms. Local experts can also be invited in to share local and personal connections between soil health and food production.
- The evidence to impact writing in the Inquire section can be assigned for homework.
- The resources in the Investigate section are from the Uncover stage of Project Hero’s Soil Quest. Students can explore the other sections related to soil as an extension to their learning, for extra credit, or to engage in a small group project-based learning.
- If classrooms have soil test kits, students can compare how soil health affects plant growth by recording pH and moisture levels across samples. Alternatively, students can make and use a red cabbage juice acid-base indicator.
Prerequisites
- This is lesson 2 of 6 in our 6th-8th grade Science Unit: Soil Solutions in Invention & Design.
- This lesson and full unit intentionally integrate NGSS Crosscutting Concepts, with students applying these concepts as thinking tools throughout the design process.
- If using soil test kits or red cabbage juice acid-base indicator to measure the pH of soil, teachers should prepare the necessary materials ahead of time.
- Teachers can bring in examples of healthy and unhealthy soil from around the community or nearby farmland.
Differentiation
- Students can watch a short video, NASA's Earth Minute: Dishing the Dirt (1:20), on the importance of moisture and soil health.
- Students can listen to one of the four podcasts from Hot Farm and the Food and Environment Network to learn how farmers in the Midwest are contributing solutions to addressing climate change. Each episode is ~30 minutes long and can be assigned for homework or background research to support students in the invention cycle.
- Students can research local farms or community gardens and evaluate which groups face challenges related to soil health.
- Students can further explore traditional Indigenous land stewardship practices and make a chart or write about how they maintain soil health and food security.
- Students can explore the Agriculture and Climate Change Student Lab to learn how extreme weather and climate change affect soil health and agriculture.
- Students scroll down to the second large frame and explore all five Climate Change and Agricultural Impacts.
- Students scroll down to the third large frame, “Innovative Agriculture,” and select one of the three videos to watch.
- Students write 5 key takeaways from their learning in their Invention Journal.
From the scientist review
This unit guides students in designing a sustainable solution to a local environmental issue, with focus on indigenous practices. A key strength is that the interdependence of soil health, ecosystems, human food systems, and the climate is stressed throughout this entire resource. The engineering design process is presented step-wise with a focus on sustainability at each step. Most importantly, design is presented in the context of working within constraints, iterating, and communicating a final design that achieves the design criteria without creating unintended effects. This unit details how climate change shapes decisions at every step of the design process and is recommended for teaching.
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About the teacher writer
Yen-Yen Chiu
Director of Education
Yen-Yen Chiu, Ed.D., is SubjectToClimate's Director of Education. She holds a Doctor of Education in Educational Leadership from the University of Phoenix and a Master of Arts in Curriculum and Instruction from the University of San Diego, and taught public school for 22 years specializing in English Language Arts, Mathematics, and Music for grades 6–12, including Advanced Placement. She is credentialed in English, Mathematics, and Introductory Music, with extensive experience designing interdisciplinary curricula that foster student choice, meaningful assessment, and authentic learning.





