Science Scientists - SJS 6th grade

He wrote a book about his observations and drawings of the natural world called “Micrographia” meaning “tiny drawings.

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold

” His most famous drawing from Micrographia is a drawing of cork-the same kind of cork used in cork boards and bottle stoppers. Since cork is made from the bark of the cork oak tree, it is essentially dead plant tissue.

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold

Using his microscope, He looked at very thin slices of cork. He noticed what looked like little rooms. Because of this, he called these shapes cells, another word for rooms.

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold

In this one book, He presented his ideas about the life cycle of mosquitoes, the origin of craters on the moon, and fossils.

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold

He is most remembered for including drawing of what he saw through a microscope.

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold

In 1637, He described a drop of water: “wretched beasties. They stop, they stand still and then turn themselves round, they are no bigger than a fine grain of sand.”

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold

By examining scrapings from his teeth, he found additional evidence of these “many very little living animalcules, very prettily a-moving.

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold

Preferred to use a microscope to study plants. In 1838 he suggested that all plants were made of cells.

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold

He knew another German biology professor, who spent most of his time studying animals.

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold

In 1839, He proposed his theory.

• Anton Van Leeuwenhoek

• Robert Hooke

• Matthias Jakob Schleiden

  Theodor Schwann

  Karl Theodor Ernst Von Siebold