NAME: ____________________ GRADE & SECTION: _____________                                     DATE: _____________
CELL THEORY HISTORICAL TIMELINE ACTIVITY
              List a few of the characteristics the following people have made to science
              List the Dates of the contributions that these people have made
                    Robert Hooke:
                    Hans & Zacharias Janssen:
                    Anton van Leeuwenhoek:
                    Matthias Schleiden:
                    Theodor Schwann:
                    Rudolph Virchow:
Directions: Get a piece of paper and create a timeline that shows the contributions to the cell
theory.
Create a Timeline showing the chronological order of these scientists and their contributions.
   1) First put your information on Inventor Cards: date,names and what they did.
   2) create your timeline.
   3) Here is what should be on the Timeline -ALL 6 INVENTORS ARE ON THE TIMELINE
    Label the time line with dates of the Scientists - draw a color picture of their discoveries
      (from the inventor card)
    The earliest date should be on the left of the timeline and the most recent date should
      be on the right
    Label each date with corresponding scientist's name & contribution(s) in an organized
      and legible manner
    Be sure your spacing shows a reasonable approximation of the amount of time that
      elapsed between dates.
Questions to Answer
   1. What theory did these scientists provide evidence for?
   2. What instrument was necessary before the cell theory could be developed?
   3. Which 3 scientists directly contributed evidence for the cell theory?
             1) __________________________
             2) __________________________
             3) __________________________
   4. How did the earlier scientists and their contributions directly affect the discoveries of later scientists (see #2)?
      For example what had to come first?
   5. List the 3 Parts of the Cell Theory:
CELL THEORY HISTORICAL TIMELINE ACTIVITY
Date: ____1590___                                    Date: 1665
Inventor: Hans and Zacharias Janssen-Dutch           Inventor: Robert Hooke-English
Picture of Invention:                                Picture of Invention:
Description: Father and Son Dutch eyeglass .
                                                     Description: looks through a microscope at a sliver of
invented the 1st compound microscope
                                                     cork. He notices what he calls cells or pores. He is the
                                                     first person to use the word cell to describe
                                                     microscopic structures.
Date: 1674                                           Date: 1838
Inventor: Anton van Leeuwenhoek - Dutch              Inventor: Matthias Schleiden -German
Picture of Invention:                                Picture of Invention:
Description: used microscopes to view many           Description: Publishes his cell theory applying it to
things including bacteria and blood cells. He made   plants He was the first to note that plants are made of
careful sketches of what he observed.                cells.
Date: 1839                                           Date: 1855
Inventor: Theodor Schwann-German                     Inventor: Rudolf Virchow-German
Picture of Invention:                                Picture of Invention:
Description: Publishes his cell theory applied to    Description: He proposed that all cells come from
animals He concluded that all living things are      other cells. He theorizes that all forms of disease come
made of cells.                                       from changes in normal cells.