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lexiconGRE / study studio

A free study beta from sqdevelopers

Give each GRE mistake
a next step.

Read a lesson. Work through an original question. Save the reasoning you want to use next time, then return to it in a later session.

Try a short study session

Read lessons and try a preview now.
ChatGPT sign-in saves your sessions, confidence and review work.

A manageable place to begin

One topic. One focused session.

These three topics have additional original practice and worked examples. Follow your session with a different remaining question when available.

01

Percentages & changing bases

Identify the reference quantity. Connect ratios, weighted rates and discounts.

7 lesson questions · original draft
02

Quadratics & constraints

Find the roots, check restrictions and connect algebra to a model.

7 lesson questions · original draft
03

Counting & conditional probability

Build the sample space. Count what the condition actually permits.

7 lesson questions · original draft

Keep your study work together

Your reasoning deserves
a place to return to.

A focused next session
Your latest visible completed learning mistakes or uncertain answers can point you back to their lesson. Recommendations come from your practice record.
Practice that moves forward
Short lesson sessions advance to unopened items in your saved progress and retained history. Passage groups stay together; the app tells you when the remaining pool runs out.
A record you can revisit
Saved reasoning repairs, due review, and separate first-recorded and repeat results help organize your study. Reading a lesson or retrying a question does not establish mastery.

Know the scope before you start

Useful study tools. Clear review status.

Lexicon is currently free. Its original content is an editorial draft; qualified subject review and student-outcome validation are pending. Start here alongside official ETS preparation. We have not validated this beta as a complete primary study source or a score predictor.

Related question families recur. Our fixed mock forms are not independent fresh assessments and do not reproduce GRE section adaptation. Read the full content and privacy details.

Explore the study studio