Are All Bacteria Harmful? | NSTA

High School | Transfer Task

Are All Bacteria Harmful?

Life Science High School

< All Fields of STEM Materials

Lesson Snapshot

Students explore the food ecosystems of two samples of yogurt with different bacteria to figure out which types are harmful and then explore the environmental conditions that allow harmful and less harmful bacteria to thrive.

Materials

You may also like

Web Seminar

Elevate Your Story: Learn About the 2026 NSTA Teacher Awards, October 22, 2025

Join us on Wednesday, October 22, 2025, from 7:00 PM to 8:00 PM ET, to learn about all the NSTA Teacher Awards available and how to apply.In this session, you'll learn about the various award categories, eligibility criteria, and the application proc...

Web Seminar

Learn and Lead – Lunch Edition: The Future of Science Instruction: Why OpenSciEd is Leading the Way, July 21, 2025

Join us on Monday, July 21, 2025, from 12:30 PM to 1:00 PM ET, to learn about OpenSciEd. Science education is evolving—and OpenSciEd is leading the way. Join us for Learn and Lead: The Future of Science Instruction, a powerful web seminar desi...

Web Seminar

Learn and Lead: The Future of Science Instruction: Why OpenSciEd is Leading the Way, July 21, 2025

Join us on Monday, July 21, 2025, from 7:00 PM to 8:00 PM ET, to learn about OpenSciEd. Science education is evolving—and OpenSciEd is leading the way. Join us for Learn and Lead: The Future of Science Instruction, a powerful web seminar desig...

Web Seminar

Web Seminar: OpenSciEd 101: An Introduction to Transforming Science Classrooms, June 16, 2025

Join us on Monday, June 16, 2025, from 7:00 PM to 8:00 PM ET, for an introduction to OpenSciEd. Curious about a new way to approach science teaching and learning? Join us for OpenSciEd 101–an introductory web seminar designed for teachers, ins...