SimCalc Graph
University of Massachusetts, Dartmouth
http://www.simcalc.umassd.edu/
This component
graphs functions and data sets from other components,
such a algebraic expression typed into a function
entry component or a data set from a simulation.
Users may scroll and zoom the graph axes, and
may "trace" the x,y coordinates of points along
a selected function. Authors can controll additional
properties of the graph, such as its title, the
axis labelling, and initial zoom settings.
Example EPoWs
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Earthquake
I-IV
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The Problem: Students determine
the location of the epicenter of an earthquake
using seismographic data. simulations and
dynamic graphs involving rate, time and
distance; speed of P and S waves in a seismograph;
Where's the Math: Students explore
rate, time and distance relationships, generating
hypothesis from graphs and simulations.
NCTM Standards: Algebra, measurement
Components: Simple world, swing
slider, simple graph, simple function, simple
clock, time label, text editor, Sketchpad,
number entry
Earthquake 1 | 2 | 3 | 4
Click on the links above to learn more about the problem series, the math involved,
sample solutions, and developers' assessment
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In the Dark with an Elephant
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The Problem: Students investigate
how the appearance of a graph changes, based
on the scale of the graph and the region
being viewed.
Where's the Math: This problem
gives students experience in manipulating
graphs by changing domain and range values
for the viewing window, which can easily
be carried over to more powerful tools such
as graphing calculators. It also allows
students to become familiar with the Cartesian
coordinate system. The questions encourage
thought about how the shape of specific
areas of a graph are not necessarily representative
of the shape of the entire graph.
NCTM Standards: Algebra, geometry
Components: SimCalc, ImageView,
FunctionEntry, NumberEntry, Data Recorder,
Standard Swing components (buttons and labels)
Learn
more about the problem, the math
involved, sample solutions, and developers'
assessment
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For additional information about this or other
components, contact Mark
Chung, ESCOT Component Coordinator
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