LEMMA

Practice

ALEKS placement math practice

Practice for the ALEKS placement math test: 66 topics from foundations through precalculus, in the order they build. Type each step; a computer algebra system checks it and names the mistake when it can. Independent practice — not affiliated with ALEKS or its publisher, McGraw Hill.

How Lemma checks your work

  • You type each step of your solution, not just the final answer — the same way you would show work on paper.
  • A computer algebra system checks every line for mathematical equivalence and valid moves, not a language model’s guess.
  • When a line is wrong, Lemma names the mistake when it can tell which move broke it, and marks a problem as assisted the moment you ask for help.
  • Only a fresh problem solved without help counts as independent — the evidence that actually predicts a real test.

What this covers

Foundations

Algebra basics

Equations & inequalities

Lines & systems

Functions

Polynomials & quadratics

Radicals

Advanced algebra

Rational expressions

Exponentials & logs

Advanced functions

Trigonometry

Advanced trigonometry

Analytic geometry

Start free

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Questions

Is there free ALEKS placement practice that checks each step?

Yes. Lemma covers 66 ALEKS placement topics with unlimited fresh problems, in the order they build, with checkpoints at 46+ Intermediate Algebra, 61+ College Algebra, 76+ Precalculus, plus 18 optional Calculus I topics. Every line you type is checked by a computer algebra system, not an AI model, and a topic passes only on four fresh problems solved without help.

How is Lemma different from asking ChatGPT to check my math?

A chatbot’s verdict on your step is a language model’s guess, and it will usually just give you the answer. In Lemma the verdict on every line comes from a computer algebra system. The AI tutor explains and hints but never grades, any help marks that problem as assisted, and only problems you solve on your own move you forward.

Do I need an account?

No. Pick ALEKS or TEAS and your first problem opens in about a minute. A cookie keeps your place in this browser, and Account inside the app gives you a link to open the same record on another device. A phone works; a tablet with a pencil is the best seat.

Is Lemma affiliated with ALEKS or the TEAS?

No. Lemma is independent practice. ALEKS is a registered trademark of McGraw Hill, and TEAS is a registered trademark of Assessment Technologies Institute (ATI).