A room where the score moves
The digital SAT reuses a small set of question patterns. Learn them, drill them until they’re automatic, and rehearse under the clock. That’s the whole method — and it’s all in here.
9 full lessons open to anyone. No account, no card.
- Practice questions
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- Lessons
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- Hours of material
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- Full-length tests
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What's in the course
46 lessons across 10 modules, built on the digital SAT’s real content domains — plus a 10,807-question bank you can filter by domain, difficulty, and type. Each card below opens with a figure from one of that module’s own lessons; there are 58 of them inside, animating the technique rather than describing it.
Math
- 1
Linear Equations in One & Two Variables
Solve, rearrange, and interpret the equations that anchor the entire Math section.
- 2
Linear Functions
Read slope and intercept as real-world quantities, not just numbers in an equation.
- 3
Systems of Two Linear Equations
Choose substitution, elimination, or the graphing calculator — whichever is fastest for the setup you're given.
- 4
Linear Inequalities
Master the one rule that generates most wrong answers: when the sign flips, and when it doesn't.
- 5
Modeling with Linear Relationships
Translate messy real-world descriptions into equations you can actually solve.
- 1
Equivalent Expressions
Factor, expand, and simplify with the specific patterns the SAT reuses constantly.
- 2
Quadratic Functions
Move fluently between standard, factored, and vertex form — each answers a different question instantly.
- 3
Exponentials, Radicals & Growth
Recognize when a situation is exponential rather than linear, and read growth factors correctly.
- 4
Nonlinear Systems & Function Behavior
Handle systems where one equation curves, and use identities to skip heavy algebra.
- 1
Ratios, Rates & Proportions
Set up proportions that can't be reversed, and handle unit conversion without losing track.
- 2
Percentages & Percent Change
Handle successive changes, reverse percentages, and the traps built into each.
- 3
One-Variable Data: Center & Spread
Reason about mean, median, and standard deviation without heavy computation.
- 4
Two-Variable Data & Models
Interpret lines of best fit, residuals, and the difference between association and causation.
- 5
Probability, Sampling & Study Design
Compute conditional probabilities and evaluate what a study can legitimately conclude.
- 1
Lines, Angles & Triangles
Use angle relationships and similarity to find lengths the problem never gives you directly.
- 2
Right Triangles & Trigonometry
Apply SOH-CAH-TOA and the special triangles without second-guessing which ratio to use.
- 3
Circles
Move between a circle's equation and its geometry, and handle arcs and sectors as fractions.
- 4
Area, Surface Area & Volume
Apply the reference-sheet formulas correctly, including how scaling changes each measure.
Reading & Writing
- 1
Words in Context
Predict the missing word before you look at the choices — the single highest-value habit on this question type.
- 2
Text Structure & Purpose
Describe what a sentence does in an argument, not just what it says.
- 3
Cross-Text Connections
Compare two short texts and pinpoint exactly where and how they disagree.
- 1
Central Ideas & Details
Find the claim that covers the whole passage — no more and no less.
- 2
Command of Evidence: Textual
Identify precisely which finding would support or weaken a specific stated claim.
- 3
Command of Evidence: Quantitative
Read a table or graph and select the data that actually supports the stated claim.
- 4
Inferences
Complete a passage with the conclusion it logically forces — never with outside knowledge.
- 1
Rhetorical Synthesis
Use bulleted notes to accomplish one specific stated goal — the goal decides everything.
- 2
Transitions
Determine the logical relationship between two sentences before considering any transition word.
- 1
Boundaries: Punctuation & Sentence Structure
Decide what can join two clauses by testing whether each side stands alone.
- 2
Form, Structure & Sense
Match verbs to their real subjects, keep tenses consistent, and attach modifiers to the right noun.
Desmos Mastery
- 1
Systems of Equations
Any time you're given two equations and asked for a solution, an intersection, or a combination like a + b. It works for nonlinear systems too — a line meeting a parabola is the same procedure.
- 2
Quadratic Equations
Any equation set equal to zero. Especially valuable when the quadratic doesn't factor cleanly, where graphing beats the quadratic formula on both speed and accuracy.
- 3
Vertex of a Parabola
Any question asking for a maximum, a minimum, the vertex, or the axis of symmetry — including word problems about peak height, maximum profit, or minimum cost.
- 4
Line of Best Fit
Any question with a scatterplot or a data table that asks for a line of best fit, a predicted value, or the meaning of a slope in context.
- 5
Exponential Growth & Regression
Any scenario that doubles, halves, or changes by a percentage over equal intervals — and any data set that curves upward rather than following a straight line.
- 6
Inequalities & Solution Regions
Any system of inequalities, or any question asking which ordered pair satisfies a set of constraints. Shading removes the need to test each choice by hand.
- 7
Equivalent Expressions
Whenever you've simplified an expression and want to confirm it, or when a question asks which of four expressions is equivalent to a given one. Graph both and see whether they coincide.
- 8
Roots & Solutions of Any Function
Any equation you can set to zero, including cubics and equations that resist factoring. It also answers 'how many real solutions' questions by counting crossings.
- 9
Parameter Questions with Sliders
Any question containing an unknown constant — 'for what value of k', 'which must be true about a', or questions about how a graph shifts when a coefficient changes.
Practice Tests
- 1
How the Adaptive Format Works
Understand section-adaptive routing and why the first module of each section matters most.
- 2
Pacing & Timing Strategy
Build per-question time budgets and a reliable rule for when to guess and move on.
- 3
Desmos Calculator & Reference Sheet
Know exactly which questions the built-in tools speed up — and which they slow down.
- 4
Answer Trap Patterns
Name the handful of predictable traps that most wrong answer choices are built from.
- 5
Diagnostic Test (Full-Length, Timed)
Establish an honest baseline score and a ranked list of your weakest content domains.
- 6
How to Review a Practice Test
Turn missed questions into a targeted study plan instead of just re-reading explanations.
- 7
Full Practice Test 1 (Timed)
Retake a full adaptive test after content work and measure domain-level improvement.
- 8
Full Practice Test 2 (Final Rehearsal)
Run a final full-length rehearsal close to test day under exact test-day conditions.
Open the wrong answers.
Most courses hand you a letter and move on. Knowing why a trap was tempting is what stops you picking it again — so open every choice on these three and read what you would get back. Nothing here is written for the landing page; all three come straight out of the bank.
Words in Context
HardIn her memoir, the diplomat describes negotiations that dragged on for months without visible progress. Yet she insists the delay served a purpose: each side needed time to abandon positions it had adopted for domestic audiences rather than out of genuine conviction. The apparent stalemate, she writes, was ______ — a necessary interval during which unrealistic demands quietly expired.
Which choice completes the text with the most logical and precise word or phrase?
Open any answer — try a wrong one first.
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SAT Chamber
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keep it forever
No subscription, nothing that renews, nothing that expires. Eight full lessons are free to read first, so you can judge it before you pay — and no score guarantee, because nobody can honestly make one.
The things people ask.
Yes — only the digital SAT. Every question uses the current formats, the practice tests are built in the real module structure, and there's a whole section on the Desmos calculator that ships with the test. Nothing here is left over from the paper exam.
Forever. One payment, no subscription, nothing that renews or expires. Come back the week before your test in a year and it'll all still be there.
That's the best time to use it. The Mistake Bank exists precisely for retakers — everything you miss gets saved and tagged with why you missed it, so your second attempt targets your actual weaknesses instead of starting over.
There's more material than most people will finish, which is deliberate — the question bank alone is thousands of questions. Do the lessons for your weakest domain first, then drill. An hour a day for a month covers a lot of ground.
Eight full lessons are open to anyone, no account and no card. That includes the Desmos walkthroughs and real practice questions with every choice explained. If those don't convince you, don't buy it.
Free · no account, no card
The door is open
Three tabs, three parts of the course. Learn a shortcut that eliminates two answers on sight, watch the calculator do the algebra, and take on the questions that decide a score.
- Desmos shortcuts
- Reading & Writing
- Math
Takes about two minutes · 9 full lessons also free