Web Links

Strong conceptual biology plus real-world resources for genetics, physiology, ecology, and disease.

• Khan Academy (Biology): Click Here
• Bozeman Science: Click Here
• HHMI BioInteractive: Click Here
• OpenStax Biology: Click Here
• CDC (Diseases + updates): Click Here
• NIH News Releases: Click Here
• WHO (Global health): Click Here
• Nature (Biology news): Click Here

Learn core chemistry clearly, then level up with better references and tougher problem sets.

• Khan Academy (Chemistry): Click Here
• ChemLibreTexts: Click Here
• OpenStax Chemistry: Click Here
• MIT OpenCourseWare (Chemistry): Click Here
• NIST Chemistry WebBook: Click Here

Solid explanations, elite practice, and simulations that build real intuition.

• The Physics Classroom: Click Here
• HyperPhysics: Click Here
• OpenStax University Physics: Click Here
• MIT OpenCourseWare (Physics): Click Here
• PhET Simulations: Click Here
• Falstad Circuit Simulator: Click Here
• NIST Physical Constants: Click Here

The math backbone that makes physics and chemistry easier—algebra, trig, calculus, and competition problem solving.

• Paul’s Online Math Notes: Click Here
• Khan Academy (Math): Click Here
• MIT OpenCourseWare (Math): Click Here
• OpenStax Math: Click Here
• Desmos Graphing Calculator: Click Here
• GeoGebra: Click Here
• WolframAlpha: Click Here

High-quality channels for deep conceptual understanding—not shortcuts, not fluff.

• The Organic Chemistry Tutor (Physics, Chem, Math, etc.): Click Here
• 3Blue1Brown (Visual math intuition): Click Here
• Veritasium (Physics concepts explained deeply): Click Here
• MIT OpenCourseWare (Full university lectures): Click Here
• Bozeman Science (Biology + AP Science): Click Here
• PBS Space Time (Advanced physics topics): Click Here
• Khan Academy (All STEM subjects): Click Here

I keep this list intentionally tight—fewer links, higher quality. If you have a resource that belongs here, send it to:

Email: carl@thephysicstutor.org