A hands-on path from "what is AI?" to a trained neural network.
QuantegyAI turns AI and machine learning into something you actually do — drag, train, and run real models live in your browser. No sign-up, no payment, no coding background, nothing to install. Preparing for a Texas teacher certification instead? Our adaptive, IRT-powered exam prep is one scroll down.
A hands-on path you can start right now — no sign-up, no payment, nothing to install. Every model trains live in your browser, and there's no coding background required.
From "what is an AI assistant?" to shipping a small app of your own. The skills work with any AI tool — Claude, ChatGPT, Gemini. No coding background needed, and you earn a certificate at the end.
Start the course → For teachers — set up your class portal →The math behind machine learning, made fluent — probability, linear algebra, optimization, and statistics, each tied to how real models actually work. High-school algebra is the only prerequisite.
Start the course →The general trunk of ML — the modeling workflow, regression and classification, naive Bayes, trees, clustering, and honest evaluation. Train every model in your browser, now with runnable Python you can edit and rerun.
Start the course →From a single neuron to a trained deep network — weighted sums, activations, the forward pass, gradient descent, backpropagation, depth, and fighting overfitting. Train real neural nets live in your browser.
Start the course →How ChatGPT and Claude actually work — next-token prediction, tokens and embeddings, attention, the transformer block, training, and sampling — ending with why models hallucinate and how to use them well. Train a tiny language model live in your browser.
Start the course →How an AI agent actually works — the perceive–decide–act loop, calling tools, the ReAct pattern, memory, planning, routing, and the guardrails that keep agents reliable — ending with the judgment of when NOT to use an agent. Run a real agent loop in your browser.
Start the course →Each exam runs on the same IRT placement-and-practice loop, calibrated to its own framework. Pick the test you're preparing for.
2,000+ items calibrated across 20 TEA competencies and 60 sub-competencies. Full adaptive engine, learning loops, and readiness score. Pass-or-refund on the 90-day pass.
Start preparing →Mapped to the ETS framework's seven content categories (Number & Quantity through Discrete Math). 14 questions free; the full adaptive engine unlocks from $29 / 30 days.
Start with 14 free →TEA framework wired up across six domains. Item bank in active calibration; sign up to get early access as it comes online.
Five hands-on lessons on the elementary number concepts the EC-6 math sub-test rewards — plus a capstone, progress tracking, and a teacher/student portal. Free to work through.
Start the course → For teachers — set up your class portal →Reading-focused certification — on our roadmap once math coverage is filled out.
Special education certification framework. Tell us you're interested and we'll prioritize accordingly.
Static prep books treat every test-taker the same — so you waste hours on topics you've already mastered and skim past the ones that cost you the exam. QuantegyAI adapts after every question, so you only see items at the right edge of your ability.
A short placement session pinpoints your ability across all 20 TExES competencies. No grinding through topics you've already mastered.
Each question is selected by Item Response Theory to match your current ability. Get it right, get harder. Get it wrong, get a worked example and a lower-difficulty variant.
When a gap appears, the engine opens a mini-loop on the missing prerequisite — then returns you to the original question to prove mastery.
A calibrated ability estimate tells you — in plain numbers — whether you are likely to pass. No guesswork, no wishful thinking.
Three things you'll see inside QuantegyAI: the adaptive engine choosing your next question, a live mastery map of every competency, and your readiness curve climbing as the gaps close.
Which of the following equals i23?
The QuantegyAI engine uses a three-parameter logistic (3PL) model — the same framework used to score the SAT, GRE, MCAT, and the TExES itself — to estimate your ability after every response.
Every question is tagged with a difficulty, a discrimination, and a guessing parameter. After each answer, your ability estimate is updated, and the next question is chosen to sit near the boundary of what you can do. That boundary is where learning happens.
Adaptive systems of this kind have been shown in peer-reviewed work to match or exceed the learning gains of human tutors in several domains, often in a fraction of the study time.
Dr. Mienie Roberts has prepared students for the Texas teacher certification exams for the past five years with a 100% pass rate. Every gap-finding question, every worked example, every adaptive nudge in QuantegyAI comes from what actually moves students from "not sure" to "passed on the first try." Dr. Roberts and her team stay reachable while you study — the AI does the heavy lifting, a real human is there when you need one.
🎥 Talk to Dr. Roberts on Zoom →A growing list of teachers who built their certification prep with Dr. Roberts.
Dr. Roberts worked with me and I passed my certification exam!
Her teaching methods helped me pass the 7-12 Math TExES state exam.
Dr. Roberts and her team prepared me and I am a middle school teacher today!
Start free. Upgrade when you're ready. Pricing applies to whichever exam you're prepping for — pick one or stack them. Praxis 5165 is currently in free preview.
Pass-or-refund: complete 90 days of active practice on your chosen exam and if you don't pass, we refund the 90-day pass. See full refund terms.
Today, fully live: TExES Mathematics 7-12 (235) with 2,000+ calibrated items across the full TEA blueprint, plus a free Praxis Mathematics 5165 sampler and a free Core Subjects EC-6 math (291) lesson course. In active calibration: TExES Math 4-8 (115) — sign up for early access. On the roadmap: STR (293) and Special Education EC-12 (161). The exam picker above has notify-me links for each.
Yes. Each exam's question bank is mapped to the framework published by the relevant agency (TEA for TExES, ETS for Praxis). For TExES Math 7-12 (235) that's the six TEA domains and twenty competencies; for Praxis 5165, the seven ETS content categories. Every item is tagged to a specific sub-competency so your gap report reflects the actual test blueprint.
QuantegyAI was built by Dr. Mienie Roberts, a mathematics professor who has prepared students for the Texas teacher certification exams for the past five years with a 100% pass rate. The item bank was authored and reviewed against TEA framework descriptors.
Books and videos give every student the same material in the same order. QuantegyAI estimates your ability after each question and picks the next item from the zone where you actually learn — neither too easy nor too hard. You spend your study time where it changes your score.
No. QuantegyAI runs in any modern browser on phone, tablet, or desktop. Your progress syncs to your account so you can switch devices.
Your email and response history are stored in an encrypted database and used only to adapt the engine to you. The privacy policy covers this in detail.
Yes. Create a free account and get a free adaptive sample on any live exam — 12 questions on TExES 7-12, 14 on Praxis 5165 — enough to see how the engine behaves on your specific strengths and gaps.
If you buy the 90-day pass for an exam, complete a minimum practice threshold across the ninety days, and do not pass that exam, we refund the cost of the 90-day pass. The exact threshold and submission steps are listed on the refund page inside the app.
Yes. Each exam is a separate purchase — your progress, mastery estimates, and readiness score are tracked per exam so a Praxis prep cycle doesn't muddy your TExES estimate (or vice versa). The exam switcher inside the app lets you flip between them at any time.