The Desvantage Blog
Calculator strategy for the digital SAT & ACT
Practical Desmos moves, honest test-prep strategy, and what the built-in calculator actually changes — written by the team that builds Desvantage.
Featured · Test BasicsIs the Desmos Calculator Built Into the Digital SAT and ACT?
Yes — the digital SAT and the online ACT both provide a built-in Desmos graphing calculator on the math section. Here's exactly what that means for how you should prepare.
Systems of Equations on the Desmos Calculator: Tap the Intersection
Type both equations exactly as written — no rearranging into y= form — and tap where the lines cross. Worked SAT/ACT-style examples included.
StrategyCalculator Strategy vs. More Content Review: What to Practice in Your Last Month
With a month before the test, most students grind more practice tests. Here's a case for spending part of that time on calculator fluency — and an honest look at when it's the wrong choice.
Calculator MovesHow to Solve Any Equation on the Desmos Calculator — No Algebra
The single highest-value Desmos move on the digital SAT and ACT: turn each side of the equation into a graph, and the crossing point is your answer. Full walkthrough with examples.
Learn the moves, then make them reflex
Two complete calculator moves, 25 practice questions, and a diagnostic — free, no card required.
Start practicing free