Development of Cell Theory Activity: 8 Hands-On Stations for Teaching Hooke, Leeuwenhoek, Schleiden, Schwann, and Virchow (TEKS 6.13A)

Chris Kesler · 8 min read

Tell a 6th grader that the word "cell" comes from a guy who thought cork looked like the tiny rooms monks lived in. They will laugh. Then tell them that for thousands of years, no one knew cells existed at all because no one had a tool to see them. The whole story of biology starts not with a discovery but with a piece of glass: the lens. Once Hans Janssen stacked two lenses in a tube in the 1500s, the door cracked open. Once Hooke pointed one at cork in 1665, the door swung wide. Everything we now know about life starts there.

That is the doorway into TEKS 6.13A. The standard asks 6th grade students to describe the development of cell theory and the contributions of scientists such as Hooke, Leeuwenhoek, Schleiden, Schwann, and Virchow. Five names, three parts of cell theory, 200 years of science, and a 6th grader who has probably never thought about how anyone figured cells out in the first place.

The Development of Cell Theory Station Lab for TEKS 6.13A closes that gap in one to two class periods. Kids look at real plant tissue and animal tissue under microscopes (or simulations), build a tissue out of building blocks to model the "cells are basic building blocks" idea, study reference cards covering each scientist's contribution with images of Hooke's microscope, Leeuwenhoek's microscope, and a modern microscope, and put the timeline together themselves. By the end, they can name every scientist, describe what each one contributed, and recite the three parts of cell theory.

⏱ 1 to 2 class periods 📓 6th Grade Science 🧪 TEKS 6.13A 🎯 Built-in differentiation 💻 Print or Digital

8 hands-on stations for teaching the development of cell theory

A station lab is a student-led activity where small groups rotate through 8 stations (plus a 9th challenge station for early finishers) at their own pace during one to two class periods. You become a facilitator instead of a lecturer. You walk around, spot-check, and break misconceptions while kids work through the rotation.

The Development of Cell Theory Station Lab has four input stations (where students take in new info on the scientists, the microscope, and the three parts of cell theory) and four output stations (where they show what they learned). Here's what's at each one.

📷 Image slot 1 — add screenshot

📷 Image slot 2 — add screenshot

4 input stations: how students learn the development of cell theory

🎬 Watch It! —

A short YouTube video walks students through the history of cell theory, the scientists involved, and the three parts of the theory. Three task-card questions tie it back to how many parts there are to cell theory, how Robert Hooke came up with the word "cell" (the cork looked like the tiny rooms monks lived in), and what Rudolf Virchow contributed (cells come from preexisting cells). Visual learners come alive at this station because they see the real microscopes, real cork samples, and real "animalcules" before they read about them.

📖 Read It! —

A one-page passage called "Discovering Cells: The Microscope's Incredible Journey" walks students through the full timeline. The vocabulary is bolded throughout (microscope, cells, living, cell theory, preexisting). The passage names the Janssen brothers (1500s lens makers), Hooke (1665, cork, named the cell), Leeuwenhoek (1670s, animalcules in pond water with a 275x microscope), Schleiden (1838, all plants are cells), Schwann (1839, all animals are cells), and Virchow (1855, cells come from cells). Three multiple-choice questions plus the vocabulary section follow. Comes in two reading levels (Dependent and Modified) plus a Spanish version.

🔬 Explore It! —

This is the heart of the lab. Two real microscopes (or two prepared slide images on a screen) are set up at the station. The first is labeled animal tissue. The second is labeled plant tissue. Students observe both and answer what they see, what is similar, and what is different. Then they take a single building block and use a pile of building blocks to recreate the plant tissue they observed. The block model lands the "cells are the basic building blocks of all living things" idea in a way no diagram can. Five questions push them past the observation: what does it mean that bacteria are made of one cell while humans have over 20 trillion?

💻 Research It! —

Students examine 11 reference cards covering the timeline of cell theory. Cards include 1665 (Hooke and cork), 1670s (Leeuwenhoek and animalcules), 1838 (Schleiden, all plants are cells), 1839 (Schwann, all animals are cells), 1855 (Virchow, cells come from cells), plus image cards of Hooke's microscope, Leeuwenhoek's small brass microscope, a modern microscope, and a sketch of cork under Hooke's microscope. Five questions check whether they can identify the necessary tool (the microscope), describe what Hooke saw, compare modern and historic microscopes, recite the three components of cell theory, and explain how Hooke's and Leeuwenhoek's discoveries set up the theory.

📷 Featured station deep-dive — add screenshot of the Explore It! task card

4 output stations: how students show what they learned

📋 Organize It! —

A three-column card sort. Kids match the scientist to their contribution and the year. Antonie van Leeuwenhoek (1683) goes with "first to craft lenses to observe single-celled organisms and called them animalcules." Robert Hooke (1665) goes with "made improvements on the lens to create a microscope, observed cork and noted it was made of cells." Schleiden (1838) goes with all plants are cells. Schwann (1838) goes with all animals are cells. Virchow (1855) goes with cells only come from preexisting cells. Easy to spot-check at a glance and forces students to lock in who did what.

🎨 Illustrate It! —

Students sketch three drawings, one for each part of cell theory. Part 1 (all living things are made of one or more cells) gets a picture supporting the idea (a single bacterium next to a multicellular organism). Part 2 (cells are the basic building blocks) gets a picture showing cells stacked into tissue. Part 3 (all cells come from preexisting cells) gets a picture showing cell division. Even kids who say "I can't draw" surprise themselves here. The three sketches force them to commit to a visual for each idea.

✍️ Write It! —

Three open-ended questions in complete sentences: describe key observations made by early scientists that contributed to cell theory (Hooke saw cork cells, Leeuwenhoek saw animalcules, Schleiden and Schwann compared plants and animals), explain what technology was crucial to the theory and why (the microscope, because no one could see cells without it), and explain the three main components of cell theory and how they relate to each other. This is the writing practice middle schoolers need and rarely get in science class.

📝 Assess It! —

Eight multiple-choice and fill-in-the-paragraph questions tied to TEKS 6.13A vocabulary (microscope, cells, living, cell theory, preexisting). Includes which option is NOT part of cell theory (animal cells are more advanced than plant cells), what main idea Schleiden and Schwann proposed (all plants and animals are made up of cells), and what technology was crucial (the microscope). The fill-in paragraph weaves all five vocabulary words into a single statement of cell theory. If you're grading the lab, this is the easiest station to grade.

Bonus Challenge It! station for early finishers

🏆 Challenge It! —

Four optional extensions: write a news article as a reporter covering Robert Hooke's discovery of the cell with details on his methods, build a 2-3 paragraph research report summarizing how microscopes have advanced, design an eye-catching campaign poster supporting the third part of cell theory (cells cannot be made spontaneously, they must come from another cell), or build a colorful anchor chart titled "The Cell Theory" with sections for each part. Requires teacher approval before they start.

How this fits into a complete development of cell theory unit

This Station Lab is the Explore day of our full Development of Cell Theory Complete 5E Lesson for TEKS 6.13A. The complete two-week unit follows the 5E method of instruction and includes an Engage hook, the Development of Cell Theory Station Lab for Explore, PowerPoint slides and interactive notebook pages for Explain, student choice projects to Elaborate, and an Evaluate assessment.

Most teachers grab the full 5E because the Station Lab lands hardest with the days around it. But if you just need a strong hands-on day on cell theory and the scientists who built it, the Station Lab on its own does the job.

Two options

Development of Cell Theory 5E Lesson cover

Full 5E Lesson $13.20 Get the 5E Lesson

Development of Cell Theory Station Lab cover

Just the Station Lab $7.20 Get the Station Lab

Materials needed to teach the development of cell theory

Materials beyond what's in the download:

Two microscopes for the Explore It! station, one set up with an animal tissue slide and one set up with a plant tissue slide. Compound microscopes are best, but handheld digital microscopes work too. If you don't have microscopes, project two prepared microscope images on a screen as a substitute.
Animal tissue slide and plant tissue slide (cheek cells and onion skin are the classics). Pre-made slides from any school supply company work, or you can make your own.
Building blocks per group for the Explore It! cell-stacking model. Lego, MegaBlocks, Duplo, or wooden blocks all work. About 30 to 40 blocks per group is plenty.
Colored pencils or markers for the Illustrate It! cell theory sketches.
Pencils and the printed answer sheets (included)
A device with internet for the Watch It! station

Standard covered: Texas TEKS 6.13A —

Describe the development of cell theory and the contributions of scientists such as Hooke, Leeuwenhoek, Schleiden, Schwann, and Virchow. Supporting Standard.

See the full standard breakdown →

Grade level: 6th grade life science

Time: One to two class periods (45 to 110 minutes total). Plan for two periods the first time you run a station lab.

Common student misconceptions this lab fixes

"One scientist invented cell theory."
Sixth graders are used to single-name discoveries (Newton and gravity, Edison and the lightbulb). They assume cells worked the same way. Cell theory was actually built over almost 200 years by at least five scientists, none of whom got the whole picture alone. The Read It! passage and the Research It! timeline cards spread the credit out: Hooke named the cell, Leeuwenhoek saw single-celled organisms, Schleiden proved all plants are made of cells, Schwann did the same for animals, and Virchow added that cells come from cells. The Organize It! card sort then forces students to match each scientist to their specific contribution. By the end, they understand science is collaborative across generations, not one genius at a time.
"Hooke saw the first living cells."
Kids assume the guy who named cells must have seen them alive. Not so. Hooke looked at cork, which is dead bark from a tree. The boxes he saw were the empty cell walls of dead plant cells. He called them "cells" because they reminded him of monks' rooms, not because he understood what cells did. The first person to see actual living organisms at the microscopic scale was Leeuwenhoek, with his 275x microscope, looking at pond water. The Read It! passage and Research It! cards make this distinction explicit, and the Write It! station asks students to describe both observations so the difference sticks.
"Cells just appear out of nothing if a body needs them."
Sixth graders sometimes assume cells form spontaneously when needed (your finger heals, so new skin cells "just appear"). This was actually the prevailing belief in science before 1855. Virchow's contribution to cell theory is the third part: cells only come from preexisting cells. The Research It! card on Virchow watching cells divide under his microscope makes the discovery concrete. The Illustrate It! station then asks students to draw a picture supporting each of the three parts, including cell division. The Challenge It! campaign poster option doubles down by making students argue against spontaneous cell generation.

What you get with this development of cell theory activity

📷 Inside-the-product — add screenshot of Read It passage or sample answer sheet

When you buy the Station Lab, you get a single download with everything you need:

Print version at two reading levels (Dependent for on-grade, Modified for additional support) plus a Spanish Read It! passage
Digital version as PowerPoint files (works in Google Slides too) at both levels for 1:1 classrooms or Google Classroom
Teacher Directions and Answer Key for both versions, all keys included
Station task cards ready to print, laminate, and drop in baskets at each station
Reference cards for the Research It! station (timeline cards for Hooke, Leeuwenhoek, Schleiden, Schwann, Virchow plus images of Hooke's microscope, Leeuwenhoek's microscope, cork under a microscope, and a modern microscope)
Sort cards for the Organize It! station (scientist, contribution, year columns with all five scientists)
Student answer sheets for each level

Tips for teaching the development of cell theory in your 6th grade classroom

Two things make this lab go smoother the first time:

1. Set up the microscopes before students walk in.

The Explore It! station depends on students seeing actual cells under the microscope. If you tell each group to focus the slide themselves, you'll burn 10 minutes per group on the eyepiece. Pre-focus both microscopes on a clear cell field at the start of the day. Tape a sticky note nearby that says "do not turn the focus knob." Each group rotates in, looks, answers, and rotates out. If you don't have two microscopes, screenshot a clear cheek-cell image and a clear onion-skin image and project them on a tablet at the station instead.

2. Pre-bag the building blocks per group.

The block-stacking activity is one of the favorite parts of this lab, but it falls apart if blocks scatter across the floor between rotations. Bag 30 to 40 blocks per group and label the bag. Groups dump them out, build their tissue model, count their cells, and put them back in the bag before the next rotation. If you have a station bin already set up for the lab, store the bag on top so the next group can grab it fast.

Get this development of cell theory activity

Development of Cell Theory Station Lab for 6th grade life science TEKS 6.13A

Buy the Station Lab - $7.20

Or if you want the full two-week experience with the Engage hook, Explain day, Elaborate extension, and Evaluate assessment all included:

Buy the full 5E Complete Lesson - $13.20

(Station Lab is included)

Frequently asked questions

What does TEKS 6.13A cover?

Texas TEKS 6.13A asks 6th grade students to describe the development of cell theory and the contributions of scientists such as Hooke, Leeuwenhoek, Schleiden, Schwann, and Virchow. Students should be able to name each scientist, explain what each one observed or proposed, and recite the three parts of cell theory: all living things are made of one or more cells, cells are the basic building blocks of life, and all cells come from preexisting cells.

Is this kids' first time meeting cell theory?

Yes for most 6th graders. They have heard the word cell since elementary school, but cell theory as a formal idea (with three parts and five scientists) is brand new. The Read It! passage introduces all five scientists in narrative order, and the Research It! timeline cards lock in the years and contributions. The Organize It! card sort then tests whether they can match each scientist to their specific contribution.

How long does this development of cell theory activity take?

One to two class periods (45 to 110 minutes total). The Explore It! microscope station is the longest piece because students need time to actually look through the eyepiece (or examine the projected image) and answer the comparison questions, so plan for two periods the first time you run a station lab. Once your class has the rotation routine down, most groups can finish all 8 stations in one period.

Do I need microscopes for this?

Two microscopes (one set up on plant tissue, one on animal tissue) make the Explore It! station hit hardest. If you don't have microscopes, you can substitute by projecting two prepared microscope images (one of cheek cells, one of onion skin) on a tablet or screen at the station. The Watch It! station also needs a device with internet.

Can I use this in a 1:1 digital classroom?

Yes. The full digital version (PowerPoint or Google Slides) works in 1:1 classrooms and Google Classroom. The Explore It! microscope activity is digitized so students click between two virtual microscope views (animal tissue and plant tissue) and answer the comparison questions. The Organize It! card sort works especially well digitally because students drag scientist names, contributions, and years into the correct columns.