Guide
The in-exam calculator
What the calculator does, how it matches the one on test day, and where it differs.
The Math modules have a graphing calculator, available throughout, and the same calculator is in the tools menu wherever you study. It is our own, built to work the way the Desmos calculator in the Digital SAT works.
What it doesLink to the section: What it does
- Graphs as you type: lines, curves, circles and shaded inequalities, such as y = 2x + 3, x^2 + y^2 = 25 or y < -x + 4.
- Solves by tapping: tap a graph to see its intercepts, its maximum or minimum, and every point where it crosses another graph. Type an equation in x alone, such as 5x + 9 = 3x + 25, and it draws a line at each solution and lists them.
- Calculates: arithmetic, powers and roots, sin, cos and tan, mean, median and stdev. An answer that is a fraction is shown as a fraction too.
- Sliders: type y = mx + b and it offers sliders for m and b.
- Tables and regressions: add a table, then y_1 ~ m x_1 + b fits a line, or any other model, to it.
Degrees or radiansLink to the section: Degrees or radians
The calculator starts in radians, as Desmos does. Most SAT trigonometry is in degrees, so switch with the Degrees button before you work out an angle.
What carries overLink to the section: What carries over
Your work stays while you close and reopen the calculator within a module. It is cleared when the next module starts, as on the real test.
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