Data
Analysis and Research Methods
Course Description and Syllabus
A 2x2 Experiment, - The Iodine Clock Reaction #13
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Part 2, Activity 6
Key Purposes:
- Students can design, run, and analyze a two-factor,
two-level full factional (2x2) experiment. This
includes stating the three questions to be addressed
and the three hypotheses to be tested.
- Students can represent main effects, and
interactions of a 2x2 experiment on an acrylic cube
and a 3-D drawing.
- Students can calculate the main effects and
interaction, and use the results to construct the
predictor equation.
- Students can convert values of the predictor
variable (independent variable) to coded valves and
compute corresponding range values of the prediction
equation.
- Students can use center point values to determine
adequacy of the predictor equation.
- Students can evaluate significance using graphical
methods.
- Students can state the definition of an interaction
in the context of the experiment.
Example: A statistical (as opposed to a
chemical interaction) exists when the effect on
reaction time of changing the concentration of one
chemical depends on the level of concentration of the
other chemical.
To see a Quick Time Movie of the The Iodine Clock
Experiment, Click the above image. File size may be
large, please allow enough time for the download.
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Description:
The Iodine Clock Reaction. This
experiment was done in a regular classroom.
The 9th
graders we were working with were taking
chemistry. If the students have not had
chemistry, the experiment would still be
appropriate, although some discussion of
good lab procedures would be needed. The
experiment studied the effect on reaction
time to achieve a dramatic chemical reaction
when the concentration levels of two
chemicals are varied. (A milky solution
rapidly turned to dark purple.)
Alignment with Michigan Curriculum
Framework:
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Mathematics
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Strand
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Standard
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Benchmark High School
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I
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Patterns, Relationships, and Functions
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1
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2, 3, 4, 5
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I
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Patterns, Relationships, and Functions
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2
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1, 2, 3, 6
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II
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Geometry and Measurement
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1
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7
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II
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Geometry and Measurement
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2
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1, 2, 5
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II
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Geometry and Measurement
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3
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1, 2, 3, 4, 5, 6
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Science
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Strand
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Standard
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Benchmark High School
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I
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Construct New Scientific and Personal Knowledge
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1
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1, 2, 3, 4, 5, 6, 7, 8, 9
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II
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Reflect on the Nature, Adequacy and Connections Across
Scientific Knowledge
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1
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1, 2, 3, 4, 5, 6
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IV
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Use Scientific Knowledge from the Physical Sciences in
Real-World Contexts
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2
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1, 5, 6
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English Language
Arts
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Strand
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Standard
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Benchmark High School
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Meaning and Communication
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1
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1, 2, 3, 4, 5
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2
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1, 3, 4
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3
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1, 3, 4, 5, 6, 8
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Language
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4
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1
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Voice
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6
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1
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Skills and Process
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7
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1, 2, 3, 4
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Depth of Understanding
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9
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1, 2, 3
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Ideas in Action
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10
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1
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Inquiry and Research
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11
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1, 2, 3, 4
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Critical Standard
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12
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1
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