As your student prepares for the digital PSAT or SAT, there's one powerful tool they’ll want to master: the Desmos graphing calculator. Unlike the old days of bringing a calculator from home, students now have access to an embedded, high-tech calculator right in the testing platform. But here's the catch—only those who know how to use it well will truly benefit.
🎙️Listen to this conversation on Using the Desmos Calculator in Digital Testing on the Tests and the Rest podcast.
Why Desmos Matters
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Built-in, free, and fair — Every student gets access to the same Desmos graphing calculator throughout the Digital PSAT and SAT.
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Maximize the calculator advantage — On the digital PSAT and SAT, a calculator is allowed for all math questions, so use it!
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Real-time visual tools — Desmos lets students instantly graph functions, solve equations, and plot data, which can simplify complex problems.
Key Features To Practice
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Graphing & Intersections: Quickly identify y‑intercepts, zeros, and intersection points. This often beats doing tedious algebra
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Sliders & Parameters: Use sliders for variables to test conditions like “no solution” by adjusting until lines are parallel
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Regression Tools: For data-based questions, students can input tables and run linear regression to find slope/intercept
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Inequalities & Systems: Shade and visually verify solutions—great for checking if points lie in specific regions
Practical Desmos Tips
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Familiarize with the test interface
Practice using the exact Desmos built into Bluebook or on desmos.com/testing. -
Two‑step problem solving
First, solve problems using your strongest method (mental math, algebra). Then use Desmos to double-check. “Two different methods make it unlikely the same wrong answer appears twice.” -
Balanced Prep approach
Although Desmos is powerful, students should also practice without Desmos so they're ready for questions where graphing isn’t ideal. -
Focus on timing
Desmos can save time, but knowing how to quickly enter equations and navigate the calculator is essential.
Supporting Your Student
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Encourage deliberate Desmos use: Choose when the tool empowers efficiency (e.g., graphs, systems), and when it isn’t necessary.
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Role-play test scenarios: Ask your child to explain their approach—did they graph? Use sliders? Check regression?
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Help track growth: After practice tests, tag questions where Desmos helped or confused them. Design drills around those areas.
Pro Prep Resources
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Desmos Practice Platform: Visit desmos.com/testing → pick “College Board” version for the exact interface https://www.desmos.com/testing/cb-sat-ap/graphing
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Seeley Test Pros/LEAP: Learn how to use DESMOS more accurately and efficiently with our SAT Desmos 101 Calculator Prep Course
✅ Final Takeaway
Desmos can be a game-changer—when used smartly. The goal is to help your student use Desmos as a tool, not as a crutch. Support them in mastering the core math and the calculator interface. That combo builds confidence, ensures accuracy, and ultimately leads to better test-day performance.
Check out our upcoming schedule of PSAT/SAT classes in Cincinnati, Cleveland, and Online, or schedule one-on-one tutoring at your convenience here.