ATOMIC THEORY TIMELINE PROJECT: (Chapter 4) Due __________________________
PA Standard Statement(s):
Science: 3.2.10B Apply process knowledge and organize scientific and technological phenomena in varied ways.
3.4.10A Explain concepts about the structure and properties of matter.
Mathematics: 2.3.8F: Use scale measurements to interpret and create maps or drawings
Objectives:
8th graders will research the development of the atomic theory, each scientist’s role/contributions to the development of the
atomic theory, and analyze whether each contribution was correct or incorrect with evidence to support it. They will synthesize the
information to write descriptors for each scientist, and create a timeline for the development of the atomic theory. Descriptors will
contain cited sources.
Students will create a timeline using math knowledge of scales and intervals, creating a scale and demonstrating the ability to
use that scale to represent time factually and accurately. Each scientist must have their descriptor and pictures artistically placed in the
correct place on the timeline.
Requirements for each Scientist:
Need a poster 22x 28
 Use index cards (3 x 5 preferred; different colors allowed)
 Write in pen (colored gel pens, markers, colored pencils allowed) or type (no pencil)
 Each scientist needs multiple cards (labels for “Contributions”, “The Experiment”,
“Correct or Incorrect”, “Extra Credit”
o Card #1Name of Scientist
Date of Contribution
Picture (photo of person, picture of the atom they believed in, or picture of experiment,...)
o Card #2Contributions to the Theory with cited sources
(may take more than one card.) *** citing Textbook (Holt; p.
)
Or other legitimate sources
o Card #3The Experiment (if they did one)
 Describe it
 Purpose
 What they found out from it and how that helped or changed the
theory of the atom
o Card #4Write whether he/she was correct, incorrect or both with evidence
If both make sure to explain what was correct and what was not.
Use comparisons to others before or after them.
o Card #5 EXTRA CREDIT
 Other Contributions or Accomplishments
The Scientists:
In your Book:
Democritus (440 BC)
Aristotle (347 BC)
John Dalton (1803)
J.J. Thomson
Ernest Rutherford
Niels Bohr
Erwin Schrodinger (1930)
Heisenberg (1927)
Dmitri Mendeleev (chapter 5)
Henry Moseley (chapter 5)
Not in book but Required:
James Chadwick
Henry Moseley
EXTRA CREDIT SCIENTISTS:
G.J. Stoney
Sir William Crookes
Eugene Goldstein
Hantaro Nagaoka
Robert Millikan
Robert Oppenheimer (1945)
Make sure to Cite Sources correctly for each Scientist including citing your book
For every day late, 10 points will be deducted until score hits a 50
RUBRICS
ALGEBRA- Timeline
A- Scale is created and used correctly, showing proper intervals for the representation of time, may have a minor mistake
Neat and clear with a labeled key or legend
B- Scale is created and used correctly, showing proper intervals for the representation of time but has one-two mistakes with
placements of scientists
Neat and clear with a labeled key or legend
C- Scale is created and used somewhat correctly, showing intervals for the representation of time but has mathematical errors, or
inaccurate scales, or three- five errors with placements of scientists
Neat and clear with a labeled key or legend
D- Scale is created and used somewhat correctly showing intervals for the representation of time but have many mathematical errors,
or inaccurate scales, or several errors with placements of scientists
Not neat, clear, with a key or legend not labeled
F- (60) Didn’t use a scale to make realistic time intervals. Incomplete Not neat, clear, with a key or legend not labeled
(50) a week or more late
(0) Didn’t turn in assignment
SCIENCE
A- All Scientists that contributed the theory are represented on the timeline in the correct sequential order. Pictures for each
scientist
Each Scientist has descriptor with correct information, proper citations, proper grammar and spelling, well written
Completed the tasks of each card accurately. Card 4 has correct evidence to support statement
B- All Scientists that contributed the theory are represented on the timeline. All or Most are in the correct sequential order.
Pictures for each scientist
Each Scientist has the descriptor with correct information, proper citations, proper grammar and spelling, well written.
Completed the tasks of each card accurately. Card 4 has some evidence to support statement
C- All Scientists that contributed the theory are represented on the timeline. All or Most are in the correct sequential order.
Pictures for each scientist
Each Scientist has the descriptor with correct information, proper citations, minor grammar or spelling errors. Minor errors of
information. Completed the tasks of each card. Card 4 has minimal evidence to support statement
D- All Scientists that contributed the theory are represented on the timeline.
Each Scientist has the descriptor with correct information, error with citations, minor grammar or spelling errors.
Completed the tasks of each card. Card 4 has no evidence to support statement
F- (60) Most Scientists that contributed the theory are represented on the timeline. Each Scientist has a descriptor with some
correct information, error with citations, grammar or spelling errors, Errors of information. Incomplete, Sloppy
Didn’t completed the tasks of each card. Card 4 has no evidence to support statement or missing
(50) a week or more late
(0) Didn’t turn in the assignment or plagiarized