Desmos Devices for Exams
an Overview of Features
Things I Show Students
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Pan and pinch/zoom the viewport and coordinate axes (or via the “wrench” icon)
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Storing values to variables
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Defining functions
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Built-in functions (e.g. logarithms and radicals)
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Tables for data and for the input/output of a function (magnifying glass zoom fit)
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Regression, and setting the regression formula as the formula for a function
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Desmos’ User Guide and Help Center and Supported Functions via the (?) icon
Things to Keep in Mind
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Using the on-screen keyboard emulates the students’ experience with a touch screen
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Desmos will mark intercepts, intersections, roots, and extrema,
and will plot a value of \(x\) defined implicitly by an equation
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Log Mode [✓] must be enabled to generate the same regression formula as a TI-83/84+
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Example plots are available to students in the “folder” menu
Things I Don’t (Explicitly) Show Students
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Saving graphs and sharing graphs
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Enlarging the display, and disabling the grid
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Sliders
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Movable points
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Label, label size and position, and dynamic labels
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Lists, and lists as an alternative to sliders
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Custom colors
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Restrictions