Example Task1 for INT1 Please note that this is a task example. No portion of this example should be used in your submission for this assessment. This example cannot be cited as a source.  In the 19th century matter was thought to be made up of tiny units, called atoms.  John Dalton applied ancient Greek concept from the philosopher, Democritus (Van Helden, 1995).  Electron is discovered by J. J. Thompson (Stern and Peredo, 2004).  He discovered negatively charged particles, electrons.  Electrons were smaller that atoms, changing previous ideas.  Subsequent discoveries in quantum mechanics radically changed our understanding of electron behavior (Krumeich, n. d.). Please note that this is a task example. No portion of this example should be used in your submission for this assessment. This example cannot be cited as a source.  Circa 1803 John Dalton introduced Atomic Theory (Frostburg, 2005).  Matter was composed of tiny, indivisible units called atoms.  Atoms were the smallest unit of matter. John Dalton (Worthington, 1895) Please note that this is a task example. No portion of this example should be used in your submission for this assessment. This example cannot be cited as a source.  J. J. Thompson in 1897 discovered electrons while working with cathode ray tubes. (Stern and Peredo, 2004).  Since no atoms of gas were present in the cathode ray tubes, smaller particles must have been present.  This meant that particles smaller than atoms exist, a big change from Dalton’s theory. J. J. Thompson (Stotesbury, 1900) A cathode ray tube (Crookes, 1879) Please note that this is a task example. No portion of this example should be used in your submission for this assessment. This example cannot be cited as a source.  In 1924 Louis de Broglie successfully theorized that electrons act like waves and particles at the same time. (Krumeich, n. d.).  This discovery meant that electrons exhibit wave- particle duality.  This was a change from Thompson’s view as electrons being only particles. Louis de Broglie, (Author unknown) Artist conception of electron as a standing wave, (Kuiper, n.d.) Please note that this is a task example. No portion of this example should be used in your submission for this assessment. This example cannot be cited as a source.  Published May 23, 1833 in the United Kingdom  Michael Faraday continued his work in discovering the connection between electricity and magnetism (Faraday, 1833).  First recorded evidence of semiconductors Please note that this is a task example. No portion of this example should be used in your submission for this assessment. This example cannot be cited as a source.  William IV was the ruling monarch of the United Kingdom (Johnson, 2013).  1833 the UK abolished all slavery in its colonies (The National Archives, n. d.). ...

1. Example Task1 for INT1
Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
tiny units, called atoms.
philosopher,
Democritus (Van Helden, 1995).
Peredo, 2004).
changed our understanding of electron behavior
(Krumeich, n. d.).
Please note that this is a task example. No portion of this

2. example should be used
in your submission for this assessment. This example cannot be
cited as a source.
introduced Atomic
Theory (Frostburg,
2005).
Matter was composed
of tiny, indivisible units
called atoms.
smallest unit of matter.
John Dalton
(Worthington, 1895)
Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
discovered electrons while
working with cathode ray
tubes. (Stern and Peredo,
2004).

3. were present in the
cathode ray tubes, smaller
particles must have been
present.
smaller than atoms exist, a
big change from Dalton’s
theory.
J. J. Thompson
(Stotesbury, 1900)
A cathode ray tube
(Crookes, 1879)
Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
successfully theorized that
electrons act like waves
and particles at the same
time. (Krumeich, n. d.).

4. electrons exhibit wave-
particle duality.
Thompson’s view as
electrons being only
particles.
Louis de Broglie,
(Author unknown)
Artist
conception
of electron
as a standing
wave,
(Kuiper, n.d.)
Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
y continued his work in
discovering the connection between electricity
and magnetism (Faraday, 1833).

5. Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
of the United Kingdom (Johnson,
2013).
in its colonies (The National
Archives, n. d.).
r as we know it was
not available.
Jackson was serving as the 7th
President (Summers, 2013)
William IV (Shee, 1833)
Andrew Jackson (Sully, 1824)
Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be

6. cited as a source.
of how materials conduct electricity.
semiconductors and theories that are part of
current knowledge (Computer History Museum,
2013).
Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
was the first material to show
electrical conduction somewhere
between conductors and non-
conductors (Faraday, 1833).
publication gives the starting
point for all semiconductor
research. (Computer History
Museum, 2013).

7. Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
d silver showed
poor conduction of electricity at low
temperatures, but conduction of electricity
increased as the compounds were heated
(Faraday, 1833).
understanding of how semiconductors
function (Computer History Museum, 2013).
Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
Computer History Museum. (2007). 1833-the first
semiconductor effect is recorded. The Silicon Engine: A
Timeline of
Semiconductors in Computers. Retrieved from
http://www.computerhistory.org/semiconductor/timeline/1833-
first.html.
[Photograph of cathode ray tube]. Crookes, W. (1879). On
radiant matter. The Popular Science Monthly, 157–167.
Retrieved from

8. http://www.electrotherapymuseum.com/Library/SirWilliamCroo
kes/pages/1880Crookes0022.htm.
Faraday, M. (1833). Experimental researches in electricity,
fourth series. Philosophical Transactions of the Royal
Society of London,123, 507–522. Retrieved from
http://www.jstor.org/stable/108004.
Frostburg, A. (2005). Dalton’s atomic theory. Retrieved from
http://antoine.frostburg.edu/chem/senese/101/atoms/dalton.shtm
l.
Johnson, B. (Ed.) (2013). Kings and Queens of England &
Britain. Historic UK. Retrieved from http://www.historic-
uk.com/HistoryUK/KingsQueensofBritain/.
Krumeich, F. (n.d.). Properties of electrons, their interactions
with matter and applications in electron microscopy.
Retrieved from
http://www.microscopy.ethz.ch/downloads/Interactions.pdf.
[Image of a deBroglie wave]. Kuiper, P. (n d).
AtomdeBroglie.jpg. 612 x 599 pixels. Retrieved
fromhttp://commons.wikimedia.org/wiki/File:Atom_deBrogie.jp
g.
[Painting of William IV]. Shee, M. A. (1833). 270.5 x 178.1
cm. Retrieved from
http://www.royalcollection.org.uk/eGallery/object.asp?.
Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
.

9. http://www.computerhistory.org/semiconductor/timeline/1833-
first.html
http://www.computerhistory.org/semiconductor/timeline/1833-
first.html
http://www.computerhistory.org/semiconductor/timeline/1833-
first.html
http://www.electrotherapymuseum.com/Library/SirWilliamCroo
kes/pages/1880Crookes0022.htm
http://www.jstor.org/stable/108004
http://antoine.frostburg.edu/chem/senese/101/atoms/dalton.shtm
l
http://www.historic-uk.com/HistoryUK/KingsQueensofBritain/
http://www.historic-uk.com/HistoryUK/KingsQueensofBritain/
http://www.historic-uk.com/HistoryUK/KingsQueensofBritain/
http://www.microscopy.ethz.ch/downloads/Interactions.pdf
http://commons.wikimedia.org/wiki/File:Atom_deBrogie.jpg
http://www.royalcollection.org.uk/eGallery/object.asp?object=4
04385&row=0
Stern, D. P., & Peredo, M. (2004). History of the electron.
Retrieved from http://www-
spof.gsfc.nasa.gov/Education/whelect.html.
[Photograph of J. J. Thompson]. Stotesbury, H. (1899–1900).
An English university. Appleton’s Popular
Science Monthly, 46, 14–25. Retrieved from
http://ia700306.us.archive.org/34/items/popularsciencemo56190
0newy/popularsciencemo56190
0newy.pdf.
[Painting of Andrew Jackson]. Sully, T. (1824). Andrew
Jackson - 7th President of the United States .
Retrieved from
http://www.senate.gov/artandhistory/art/resources/graphic/xlarg

10. e/32_00018.jpg
Summers, R. S. (2013). Andrew Jackson. POTUS. Retrieved
from
http://www.potus.com/ajackson.html.
The National Archives. n d. “Slavery.” Slavery.
http://www.nationalarchives.gov.uk/education/lesson27.htm.
[Photograph of Louis de Broglie]. Unknown. (1929). Louis de
Broglie. Retrieved
fromhttp://www.physics.umd.edu/courses/Phys420/Spring2002/
Parra_Spring2002/HTMPages/w
hoswho.htm.
Van Helden, A. (1995). Atomism. The Galileo Project.
Retrieved from
http://galileo.rice.edu/sci/theories/atomism.html.
[Engraving of John Dalton]. Worthington, W. H. (1895).
Frontispiece of John Dalton and the Rise of
Modern Chemistry. Retrieved from
http://commons.wikimedia.org/wiki/File:Dalton_John_desk.jpg.
Please note that this is a task example. No portion of this
example should be used
in your submission for this assessment. This example cannot be
cited as a source.
http://www-spof.gsfc.nasa.gov/Education/whelect.html
http://www-spof.gsfc.nasa.gov/Education/whelect.html
http://www-spof.gsfc.nasa.gov/Education/whelect.html
http://ia700306.us.archive.org/34/items/popularsciencemo56190
0newy/popularsciencemo561900newy.pdf
http://ia700306.us.archive.org/34/items/popularsciencemo56190
0newy/popularsciencemo561900newy.pdf

11. http://www.senate.gov/artandhistory/art/resources/graphic/xlarg
e/32_00018.jpg
http://www.potus.com/ajackson.html
http://www.nationalarchives.gov.uk/education/lesson27.htm
http://www.physics.umd.edu/courses/Phys420/Spring2002/Parra
_Spring2002/HTMPages/whoswho.htm
http://www.physics.umd.edu/courses/Phys420/Spring2002/Parra
_Spring2002/HTMPages/whoswho.htm
http://galileo.rice.edu/sci/theories/atomism.html
http://commons.wikimedia.org/wiki/File:Dalton_John_desk.jpg
DHT Task 1
value: 0.00 value: 1.00 value: 2.00 Score/Level
Articulation of
Response
(clarity,
organization,
mechanics)
The candidate provides unsatisfactory
articulation of response.
The candidate provides weak articulation of
response.
The candidate provides adequate articulation
of response.
A1. Scientific
Concept or

12. Phenomenon
The candidate does not identify a specific
scientific concept or phenomenon for which
understanding has changed over time.
Not applicable. The candidate identifies a specific scientific
concept or phenomenon for which
understanding has changed over time.
A1a.
Understanding
The candidate does not provide a logical
explanation of how scientific discoveries have
changed understanding of the scientific
concept or phenomenon over time.
The candidate provides a logical explanation,
with insufficient support, of how scientific
discoveries have changed understanding of
the scientific concept or phenomenon over
time.
The candidate provides a logical explanation,
with sufficient support, of how scientific
discoveries have changed understanding of
the scientific concept or phenomenon over
time.
A1b.
Examples
The candidate includes 0–1 appropriate

13. examples that support the explanation.
The candidate includes 2 appropriate
examples that support the explanation.
The candidate includes 3 appropriate
examples that support the explanation.
A2. Historical
Event
The candidate does not identify a specific
historical event that has changed our scientific
understanding of an aspect of the natural
world.
Not applicable. The candidate identifies a specific historical
event that has changed our scientific
understanding of an aspect of the natural
world.
A2a. Social
and Historical
Context of
Event
The candidate does not provide a logical
discussion of the social or historical context in
which the event occurred.
The candidate provides a logical discussion,
with insufficient detail, of the social or
historical context in which the event occurred.

14. The candidate provides a logical discussion,
with sufficient detail, of the social or historical
context in which the event occurred.
A2b. Impact of
Historical
Event
The candidate does not provide a logical
discussion of the impact that the historical
event has had upon scientific understanding
of an aspect of the natural world.
The candidate provides a logical discussion,
with insufficient support, of the impact that the
historical event has had upon our scientific
understanding of an aspect of the natural
world.
The candidate provides a logical discussion,
with sufficient support, of the impact that the
historical event has had upon our scientific
understanding of an aspect of the natural
world.
A2c. Analysis
Support
The candidate includes 0 appropriate
examples that support the analysis.
The candidate includes 1 appropriate example
that supports the analysis.

15. The candidate includes 2 appropriate
examples that support the analysis.
B. Sources When the candidate uses sources, the
candidate does not provide in-text citations
and references for each source used.
When the candidate uses sources, the
candidate provides appropriate in-text
citations and references with major deviations
from APA style.
When the candidate uses sources, the
candidate provides appropriate in-text
citations and references accurately or with
only minor deviations from APA style, OR the
candidate does not use sources.
SUBDOMAIN 114.1 - SCIENTIFIC CONCEPTS, THEORIES, &
INQUIRY
Competency 114.1.2: Fundamentals of Natural Science - The
graduate
examines fundamental concepts and theories in the natural
sciences.
Introduction:
The body of scientific knowledge and understanding constantly

16. undergoes change
and refinement. Scientific discoveries and historical events have
the capacity to alter
our understanding of scientific concepts and the natural world.
Scientific discovery is based on observation, study, and
experimentation, which in
turn leads to new understanding. Theories such as the big bang
are examples of a
concept or phenomena in science about which what we know
has changed over time
based on new knowledge, understanding, and research.
Historical events, such as major natural disasters, have often led
to new discoveries
about our natural world, especially due to their unique capacity
to yield real world
data that can be further studied in the lab and field using
models, simulations,
smaller scale studies, etc.
In this task, you will explore specific examples of how our
scientific understanding
has changed over time based on research and new discoveries on
(1) a concept in
science, and (2) as a result of a historical event in our natural
world.
Task:
A. Create a multimedia presentation (e.g. PowerPoint, Keynote)
(suggested length of
8–10 slides) in which you do the following:
1. Identify a specific scientific concept or phenomenon for
which our

17. understanding has changed over time (e.g., the nature and
structure of the
atom, genetics, plate tectonics, evolution, the solar system, big
bang,
biogeography).
a. Explain how scientific discoveries have changed our
understanding of that
scientific concept or phenomenon over time.
b. Include three specific, sequential examples that support your
explanation
of how your chosen concept has changed over time based on
new
knowledge and understanding.
2. Identify a specific historical event that has changed our
scientific
understanding of an aspect of the natural world (e.g., the
eruption of Mount
St. Helens, the tsunami in Indonesia, the moon landing,
Chernobyl disaster,
Exxon Valdez oil spill, major floods, earthquakes, tornadoes).
a. Discuss the social or historical context in which the event
occurred.
b. Discuss the impact that your chosen historical event has had
upon our
scientific understanding of an aspect of the natural world.
c. Include two specific examples that support your analysis of
how this event
added to or changed our understanding of science in the natural
world.
B. When you use sources, include all in-text citations and

18. references in APA format.
Note: When bulleted points are present in the task prompt, the
level of detail or
support called for in the rubric refers to those bulleted points.
Note: For definitions of terms commonly used in the rubric, see
the Rubric Terms
web link included in the Evaluation Procedures section.
Note: When using sources to support ideas and elements in a
paper or project, the
submission MUST include APA formatted in-text citations with
a corresponding
reference list for any direct quotes or paraphrasing. It is not
necessary to list sources
that were consulted if they have not been quoted or paraphrased
in the text of the
paper or project.
Note: No more than a combined total of 30% of a submission
can be directly quoted
or closely paraphrased from sources, even if cited correctly. For
tips on using APA
style, please refer to the APA Handout web link included in the
APA Guidelines
section.