CHEN MATH ACADEMY - VIDEO + PRACTICE

HOW TO USE THIS PACKAGE
1. Extract the entire ZIP (do not open pages inside the compressed ZIP).
2. Open video-practice.html in your browser.
3. Search for a lesson or choose a course.
4. Watch video opens the matching YouTube link.
5. Practice PDF opens that lesson's worksheet. Worked answers opens its answer section.
   If your PDF viewer ignores the page link, scroll to the Worked answers pages.

WHAT IS INCLUDED
352 lesson-specific PDF companions, each with 4-12 practice questions and worked answers.
114 reusable topic sets contain 456 distinct original questions. Similar lessons reuse
questions intentionally; the number of assigned questions is not a unique-question count.
The original website pages also link practice beneath their embedded videos.
A separate 30-question Precalculus Modeling with Equations packet is included as a bonus.
The teacher coverage index lists each video, topic match and PDF.

ALIGNMENT AND SCOPE
The inventory combines your saved 23-page Chen Math Academy Video Links PDF and
website files. Video IDs identify lessons and deduplicate repeated listings.
Matches are based on the saved titles and course context, not a review of full video
transcripts. The 38 related-review entries need teacher confirmation for exact lesson
coverage. They are extra review, not verified replicas of a particular lecture or exam.
The remaining 314 entries have identifiable topic matches, but still do not certify
coverage of every subtopic or example in the video. Some saved titles are truncated.
New videos uploaded after the saved list are not automatically included.
YouTube availability was not independently checked. Internet is needed to watch videos;
the downloaded PDFs, directory, filters and answer keys work from the extracted folder.

WEBSITE DEPLOYMENT
This is a complete static website package with index.html at its root. Keep the
worksheets folder and all CSS/JS files alongside the HTML pages. Deploy the extracted
contents using your existing Cloudflare website workflow. Uploading the files there is
still required to update ChenMathAcademy.org. This ZIP alone does not change the live site.

EXPANDED INTERACTIVE PRACTICE
Open practice.html for 12 topics and 48 guided questions per subject (336 total across seven subjects).
Use Topic, Level and Choose a question to move through the sets. Each explanation
includes why the method works, steps, a check and a common mistake. Show next step
reveals the process gradually; Full explanation reveals everything. New variations
provide additional practice. Session progress resets when the page is reloaded.
The 352 video worksheets remain available through video-practice.html.

SAT / ACT AND STUDY MUSIC UPDATE
Open exam-practice.html for 20 SAT-style and 20 ACT-style original math questions,
answer checking, first-try progress and worked solutions. Progress lasts for this page session.
The SAT Math and ACT Math links at the top of each page open the relevant set.
Study music offers Soft keys and Ambient instrumental with Play/Pause, volume and mute.
Original synthesized instrumental audio runs in the browser; no commercial recordings
are included. Music is off initially and pauses when you leave the tab. Press Play again
after navigating to another page. Pause music before watching a lesson.
The full package keeps the existing lessons, PDFs and interactive practice.
Extract and upload the complete contents with index.html at the root through your
existing Cloudflare deployment workflow. This file does not update the live site itself.


SEPTEMBER 10 — ALGEBRA II PRACTICE EXPANSION
60 new guided questions: 20 graphing polynomial functions, 20 rational exponents, and 20 simplifying radical expressions.
Open Algebra II and use the new practice links, or open the Practice Lab and select Algebra II. Total Practice Lab bank: 396 questions.
Polynomial graph solutions appear when the full explanation or all steps are revealed. Numerical answer boxes specify the requested coefficient, exponent, intercept, or value.
To publish: extract this ZIP and upload the website files to your existing Cloudflare project, keeping index.html at the upload root. This package has not been uploaded to the live domain by ChatGPT.


FREE DIAGNOSTICS UPDATE
Open diagnostics.html for seven 15-question course tests (Algebra I, Geometry, Algebra II, Precalculus, Trigonometry, Calculus AB, Calculus BC) and two 20-question SAT/ACT math skill checks. 145 questions total, selected from existing Academy practice banks.
Each test provides scoring, skipped-answer confirmation, worked explanations, and links to review the sampled skills. Numeric answers accept decimals and simple fractions. Round repeating decimals to three places. Progress is kept only while the page stays open.
These are informal selected-skill checks, not validated placement tests or predicted exam scores. All tests are free with no signup.
The homepage, course pages and practice directories link the new tests.

TO UPDATE YOUR EXISTING CLOUDFLARE WEBSITE
Extract this complete ZIP using Windows Extract All. Upload the contents of the extracted folder through the same Cloudflare project currently serving Chenmathacademy.org, with index.html at the root. This archive is a full website package, not just a patch. Back up your current deployment first. After deploying, open /diagnostics.html and test a course link. The archive alone does not change the live site.