When van Leeuwenhoek saw cells and single-celled organisms for the first time, he knew these small things were a big deal! Share his discoveries with young learners through a narrated video, model-building activity, and scale study....

For this cells worksheet, students answer questions about the first person to see a cell as well as the evolution of microscopes. They define the parts of a cell and tell the differences between Prokaryotes and Eukaryotes. There are 20...

In this bacteria worksheet, students read several elements of bacterium cells, their diet, types, locations, reproduction, resting stages, effects of, and classification. Students also study a cross-section of bacterium cells.

Learn about the life and work of Antonie van Leeuwenhoek, best known for his work on the improvement of the microscope, and considered to be the first microbiologist.

This site from University of California has a biography and picture of Antony van Leeuwenhoek, a scientist in the 18th century.

A portrait of Antoni van Leeuwenhoek from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

Explanation of when the cell was discovered and how ideas have evolved into modern cell theory. Discover the cell structures and their functions.

This resource presents extensive information for learning about and teaching evolution including an in depth course "Evolution 101", teaching materials, and a resource library.

This article helps students identify the scientists that first observed cells.

The biogenesis theory is explained and how it differs from the theory of spontaneous generation. The work of early scientists to prove or disprove these theories is described, including discoveries in microbiology. Louis Pasteur is...