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and physics. Advanced knowledge in these areas is not
required, but background knowledge acquired in general,
introductory science courses may be needed to correctly
answer some of the questions.
The science section focuses on multidimensional
assessment, with questions that assess science content in
concert with science skills and practices.
The questions require you to:
y
recognize and understand the basic features of, and
concepts related to, the provided information
y
examine critically the relationship between the
information provided and the conclusions drawn or
hypotheses developed
y
generalize from given information to gain new
information, draw conclusions, or make predictions.
Note: You are not permitted to use a calculator in the
science section.
Four scores are reported for the science section: a score
for the section overall and three reporting category scores
based on scientific knowledge, skills, and practices. The
approximate percentage of the section devoted to each
reporting category is:
Interpretation of Data (40–50%)
This category asks you to manipulate and analyze scientific
data presented in scientific tables, graphs, and diagrams (e.g.,
recognize trends in data, translate tabular data into graphs,
interpolate and extrapolate, and reason mathematically).
Scientic Investigation (20–30%)
This category requires you to understand experimental
tools, procedures, and design (e.g., identify controls and
variables) and compare, extend, and modify experiments
(e.g., predict the results of additional trials).
Evaluation of Models, Inferences, &
Experimental Results (25–35%)
These questions ask you to judge the validity of scientific
information and formulate conclusions and predictions
based on that information (e.g., determine which
explanation for a scientific phenomenon is supported by
new findings).
The science section presents information in three formats:
•
Data Representation (25–35%): This format presents
graphic and tabular material similar to that found in
science journals and texts. The questions associated
with this format measure skills such as recognizing
relationships among data in tables and graphs;
interpolation and extrapolation; and translating tabular
data into graphs.
•
Research Summaries (45–60%): This format provides
descriptions and results of one or more related
experiments. The questions focus on the design of the
experiments and the interpretation of experimental results.
•
Conflicting Viewpoints (15–20%): This format presents two
or more explanations for the same scientific phenomena
that, because they are based on differing premises or
incomplete data, are inconsistent with one another. The
questions focus on the understanding, analysis, and
comparison of alternative viewpoints or hypotheses.
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Read the passage carefully.
Before you begin answering a question, read the scientific
material provided. It is important that you read the entire
text and examine any tables, graphs, or figures. You may
take notes about important ideas. Some of the information
sets will describe experiments. You should consider the
experimental design, including the controls and variables,
because questions are likely to address this component of
scientific research.
9
Note the different viewpoints in passages.
Some material will present conflicting viewpoints, and
the questions will ask you to distinguish among them. It
may be helpful for you to take notes summarizing each
viewpoint about specific portions of the section.
Writing Section (Optional)
If you register for the A C T with writing, you will take the
writing section after the four multiple-choice sections. Your
score in the writing section will not affect your scores on the
multiple-choice or your Composite score.
The writing section is a 40-minute essay test that measures
your writing skills—specifically, writing skills taught in
high school English classes and in entry-level college
composition courses.
The section consists of one writing prompt that describes
a complex issue and provides three different perspectives
on the issue. You are asked to read the prompt and write
an essay in which you develop your own perspective on the
issue. Your essay must analyze the relationship between
your own perspective and one or more other perspectives.
You may adopt one of the perspectives given in the prompt
as your own, or you may introduce one that is completely
different from those given. Your score will not be affected
by the perspective you take on the issue.
Five scores are reported for the writing section: a single
subject-level writing score reported on a scale of 2–12 and
four domain scores that are based on an analytic scoring
rubric. The subject score is the rounded average of the four
domain scores. The four writing domains are:
Ideas and Analysis
Scores in this domain reflect the ability to generate
productive ideas and engage critically with multiple
perspectives on the given issue. Competent writers
understand the issue they are invited to address, the
purpose for writing, and the audience. They generate ideas
that are relevant to the situation.
Development and Support
Scores in this domain reflect the ability to discuss ideas,
offer rationale, and bolster an argument. Competent
writers explain and explore their ideas, discuss implications,
and illustrate through examples. They help the reader
understand their thinking about the issue.
Organization
Scores in this domain reflect the ability to organize ideas
with clarity and purpose. Organizational choices are integral
to effective writing. Competent writers arrange their essay
in a way that clearly shows the relationship between ideas,
and they guide the reader through their discussion.