Classify bacteria
Free printable Grade 6 science worksheet for "Classify bacteria" — practice microorganisms. No-prep, print or assign online.
This middle-school Life Science worksheet challenges students to classify bacteria by shape, structure, and habitat, building the taxonomic reasoning essential for understanding microbiology. Teachers can introduce it alongside a lesson on prokaryotes to help students organize new vocabulary and distinguish bacterial groups with confidence. Classifying microorganisms lays the groundwork for understanding infectious disease, beneficial bacteria, and broader ecosystem roles.
Learning objectives
- Classify bacteria using shape, structure, and habitat as criteria
- Distinguish between major bacterial groups using scientific vocabulary
- Explain how bacterial classification connects to their ecological roles
Answer Key
How to use this worksheet
- Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
- Print at home or in class for Middle School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Classify bacteria” worksheet free?
Yes. “Classify bacteria” is a free printable Science worksheet. Sign in with Google or email to download the PDF instantly.
What grade or age is this Science worksheet for?
It's designed for Middle School (ages 11–14), covering Microorganisms.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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