Observed arrival · 2026-09-25

Lemma’s competition-math practice room

lemmamath.net Visit website

Editorial interest 77/100 Selection signal · not a rating of the site

Lemma presents a free practice trainer for AMC, AIME, and MATHCOUNTS, with contest-style problems, hints, and worked solutions.

Landing page captured for the 2026-09-25 issue.

For: Students preparing for AMC, AIME, or MATHCOUNTS
Worth noticing: The described answer formats include A–E bubbles for multiple-choice contests and three-digit entry for AIME.

Field notes

The page lays out a timed practice sequence with contest-specific answer formats: A–E bubbles for multiple-choice rounds and three-digit entry for AIME. A sample AMC 10 number-theory problem is visible with a solution-reveal control. The founder identifies Lemma as a student project and reports six AIME qualifications and a perfect AMC 8 score in 2022; the extract does not independently verify those credentials.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

◎NicheUnusually specific use

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