Study guides
The DeltaMath and Membean modules
that actually cost points
One guide per module: how it is graded, the mistake that loses the point, a worked example, and what the auto-solvers do with it. No answer keys, because the questions are randomised per student. The method is what transfers.
DeltaMath
Ten guides covering the modules students search for most: trig, proofs, special triangles, angles, domain and range, slope, systems, the missing answer key, and what DeltaMath can actually see.
DeltaMath Answers — How to Get Them With No Answer Key
DeltaMath referenceCan DeltaMath Detect Cheating? What It Actually Sees
What DeltaMath records about your session, what the teacher dashboard shows, what it cannot see, and which patterns actually draw attention.
DeltaMath referenceDeltaMath Answer Key for Algebra 1 & Algebra 2
Why there is no DeltaMath answer key for Algebra 1 or Algebra 2, what the randomiser actually changes, and a module-by-module map of what to do instead.
DeltaMath module guideIdentify Angles With Terminology — DeltaMath Answers
The DeltaMath module that asks you to name angle relationships. Every term decoded, and how to solve transversal problems with equations.
DeltaMath module guideDeltaMath Triangle Proofs — Answers for Levels 1 to 4
Triangle proofs are the one DeltaMath module with no numeric answer. How the drag-and-drop grading works, the reason tiles, and a full worked proof.
DeltaMath module guideRatios of Special Triangles — DeltaMath Answers
The 45-45-90 and 30-60-90 modules on DeltaMath. The two ratios, how to tell which side is which, and why exact radical form is what actually costs the point.
DeltaMath module guideDeltaMath Trig Answers — Ratios, Sides & Angles
The three right-triangle trig modules on DeltaMath: picking the ratio, solving for a side versus an angle, and the calculator setting that ruins answers.
DeltaMath module guideVisual Domain and Range — DeltaMath Answers
Reading domain and range off a DeltaMath graph: what open and closed circles mean, interval versus inequality notation, and how to type infinity.
DeltaMath module guideSystem of Equations From Context — DeltaMath Answers
The two DeltaMath word-problem modules: writing a system and solving one. The four sentence patterns, the direction trap, and why they grade differently.
DeltaMath module guideFinding the Slope Graphically — DeltaMath Answers
Reading slope off a DeltaMath graph: lattice points, sign errors, zero versus undefined slope, and which equation form the answer box wants.
Membean
How Membean's sessions and quizzes are tracked, what the answer bots and extensions really do, and the risks of each approach.
Membean Help: Answers, Bots & Automation Explained
A plain guide to getting help with Membean: how the platform works, what answer tools and automation actually do, the risks, and which approach fits you.
GuideHow to Hack Membean in 2026 (The #1 Membean Hack)
GuideMembean Quiz Answers: How to Auto-Fill Every Graded Quiz
About PicoMath
PicoMath publishes plain-English guides to the online math and vocabulary platforms schools assign. The guides are written by the teams behind Delta Genie and MemGenie, the Chrome extensions that solve DeltaMath and Membean in the page; every guide says so where the tool comes up, and none of them is a substitute for the method it explains.
Looking for the original picomath numerical library (erf, gamma, expm1 and friends in 18 languages)? That public-domain project now lives on GitHub at ghewgill/picomath.