Welcome to physics!
You've made a great choice, deciding to study IB Physics. In this course, you will learn how the world works, from everyday objects to stars and nuclei. And this website will provide you with everything you need to succeed in your studies.
This website has been written specifically for you, an IB Physics student. We've included everything we think you will need to succeed at IB Physics, including:
- An interactive eBook we've written just for you that includes hundreds of practice questions you can complete at your own pace
- Hundreds more multiple-choice questions (MCQs), physics problems, and tests that your teacher can assign
- 75 Activities for physics students to learn the practical side of physics
- Guidance on Assessment in IB Physics, especially the Scientific Investigation
- Expert advice on Review/revision for the External Assessment (Exam)
- A section about links to DP essentials such as the learner profile, TOK, CAS, the Extended Essay, and approaches to learning
If you want to get straight to it, check out the first sub-topic, A1 interactive: Displacement and velocity.
This website was started by Chris Hamper in 2011. Emma Mitchell came aboard in 2021. Chris and Emma also write the Oxford IB Physics textbook. Danny Doucette joined the team in 2026. We are all lifelong physics teachers, and we know IB physics inside and out. We've been teaching IB Physics and running workshops for teachers for decades. You can read more about us in the Site Authors box on the home page.
 Chris Hamper |  Emma Mitchell |  Danny Doucette |
As part of the InThinking Guarantee, all of the text written on this website was written by a human. That means sometimes there are typos or mistakes (sorry! please ask your teacher to let us know and we'll fix mistakes pronto). That also means that none of the text is written by AI. Everything you read is carefully designed to help you better understand physics. 0% slop: we promise. We sometimes use AI to help with image processing and writing code for the simulations you see on the website.
Although we are regular teachers with our own classes, we update this website at least once per week. We'll try to make sure things don't move around too much, but you will probably see new pages appearing as we invent new experiments for you to do, write new practice questions, and continue to improve how we help students prepare for their IB Physics assessments.
Physics is awesome!
- It lets you make exact predictions about the world. If you connect one D-cell battery to an LED, it won't light up. If you connect two, it will. And if you connect three, the LED will shine brightly for a moment and then break. Exact predictions allow you to build things that will reliably work.
- It gives us a unique way to answer questions about the origin, evolution, and future of the universe; about how subatomic particles combine to form atoms, molecules, and everything else; and about how forces cause everything to happen.
- Physics gives you a new way of looking at the world. Once you understand forces, you'll see them everywhere. You will see the world differently when you learn about momentum, energy, fields, and quantum physics, too.
- Practical work in physics gives you a chance to be hands-on in a way that most IB students never otherwise experience.
We might be biased, but we think physics is the best. Hopefully, by the time you're done learning it, you will agree!
All materials on this website are for the exclusive use of teachers and students at subscribing schools for the period of their subscription. Any unauthorised copying or posting of materials on other websites is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.