Intulab ← All courses

Intulab

Terms of use

Last updated October 24, 2026

The short version
  • These are free, unofficial study aids made by a student.
  • Use them to study, not on graded work.
  • They may contain mistakes. Check important things with your teacher or official materials.
  • The content is mine. Please don't copy or republish it without asking.

These terms cover Intulab and its course sites (Mechanics Lab, E&M Lab, Chemistry Lab, Calculus Lab, Biology Lab and Precalculus Lab) at jiacode2030.github.io. By using the sites, you agree to them. If you don't agree, please don't use the sites.

1. What these sites are

Intulab is an independent student project by Jiarui Li. It is not affiliated with, reviewed by, or endorsed by the College Board, any university, or any school.

2. Use it to study, not on graded work

The sites are for learning and practice. Follow your school's and teacher's rules on academic integrity. Don't use the sites on homework you submit, in labs, or during quizzes and exams unless your teacher allows it.

3. No guarantees

I work to keep the content accurate, but it may contain errors or go out of date. Course outlines and exam formats change, so check the official course and exam description on College Board's AP Central. The sites are not a substitute for your teacher, textbook or official materials.

The sites are provided "as is" and "as available", without warranties of any kind, express or implied. That includes accuracy, fitness for a particular purpose and availability. To the fullest extent the law allows, I'm not liable for any loss or damage from using the sites or relying on their content, including exam results or grades. Some places don't allow these limits, so they may not all apply to you.

4. Copyright

© 2026 Jiarui Li. All rights reserved. The text, explanations, simulations, diagrams, practice problems, free-response questions and code on these sites are my original work, unless noted otherwise.

You're welcome to use the sites for your own study, and teachers may share links with their classes. You may not copy, republish, sell, or build another site or product from the content without written permission. Short quotes with a link back are fine.

The practice and free-response questions are original, written in the style of AP exams. They are not copies of College Board questions. If you believe something here infringes your rights, contact me (see below) and I'll look into it right away.

5. Trademarks

AP® and Advanced Placement® are trademarks registered by the College Board, which is not affiliated with, and does not endorse, these sites. Other names belong to their owners and are used only to describe the courses covered.

6. Feedback and reports

Reports are posted publicly on GitHub and are covered by GitHub's terms. If you send a correction or suggestion, you agree that I may use it to improve the sites without owing you anything. Please keep reports respectful, on topic, and free of personal information. I may edit or remove any report.

7. Other websites

The sites link to other websites, such as AP Central, GitHub, LinkedIn and Instagram. I'm not responsible for their content or practices.

8. Changes

I may change the sites or these terms at any time, or stop offering the sites. If these terms change, I'll update the date above. Continuing to use the sites after that means you accept the new terms.

9. Privacy

See the Privacy policy for how the sites handle data.

10. Contact

Open an issue in intulab-feedback, or send a private message on LinkedIn.