Independent Student-Made Resource
This website is created by Daniel Pang as a supplementary study resource. It is not an official course, exam resource, or answer key. It is not affiliated with, endorsed by, or approved by College Board, BASIS, your school, or your teachers. AP is a trademark of College Board.
No Teacher Review or Approval
The explanations, mathematical examples, interactive graphs, practice questions, and answers have not been reviewed or approved by a teacher. They may contain factual errors, omissions, oversimplifications, calculation mistakes, inaccurate labels, or software defects. A graph may illustrate a specific model whose assumptions do not apply to another question.
Verify Before Relying on It
Use this tool alongside your assigned materials, official course resources, and your teacher’s guidance. Verify important conclusions and calculations independently. If the site conflicts with your teacher’s instructions or an official marking scheme, ask your teacher for clarification. Numerical graph values are illustrative unless explicitly stated otherwise.
Answers, Grades & Responsibility
No guarantee is made about accuracy, completeness, availability, suitability for a particular exam, or any grade or learning outcome. Incorrect material here could contribute to a wrong answer, lost marks, or other academic consequences. You decide whether and how to use the information.
To the extent permitted by applicable law, Daniel Pang does not accept responsibility for losses, incorrect answers, missed marks, or academic outcomes resulting from reliance on this tool. Nothing in this notice excludes liability or rights that cannot lawfully be excluded. Selecting “Agree” acknowledges the notice; it does not turn the material into verified or teacher-approved guidance.
Report Mistakes or Unclear Explanations
If you find an issue, please contact Daniel Pang on Microsoft Teams or email yukho.pang90396-bisz@basischina.com. Include the topic link, the graph settings or question, what appears wrong, and any suggested correction or supporting source. A screenshot can help identify a graph or layout issue.
Reports help improve the resource. A report does not guarantee an immediate correction, and important information should still be verified while an issue is being reviewed.
Course Materials & Local Progress
The site presents rewritten explanations and illustrative models based on supplied course materials. It does not republish the full slide decks, videos, or classroom tests. Video review used sampled frames rather than complete audio transcription, and a Microsoft Loop file could not be fully interpreted.
Topics you mark as reviewed are saved in this browser’s local storage. Notice acceptance is remembered for this browser tab’s session. Tutorial completion or skipping is also remembered in this browser; clearing site data can reset it. There is no account-based progress synchronization. Issue-report buttons open your email application or copy a page link; they do not send a message automatically.