Sirius Revision

My name is Mitch Campbell, and I'm a Canadian, living in Denmark with my wife and two daughters. I love making resources to support students!

Scroll down for playlists on the following subjects:
-Physics SL and HL made by me
-Biology SL and HL made by Cheryl Hickman
-Chemistry SL and HL made by David Paddock
-Maths Applications (AI) SL made by me
-Maths Analysis (AA) SL made by me

Cheers, Mitch (November 2025)

Join our Mid-IB and Pre-IB courses online in July!

Join our Mid-IB and Pre-IB courses online in July!
Structure 3.2.5 Naming Guidelines 1 [IB Chemistry SL/HL]

Structure 3.2.5 Naming Guidelines 1 [IB Chemistry SL/HL]
Paper 1B - Absolute, fractional, percentage uncertainty [IB Physics SL/HL]

Paper 1B - Absolute, fractional, percentage uncertainty [IB Physics SL/HL]
Paper 1B - Linearisation [IB Physics SL/HL]

Paper 1B - Linearisation [IB Physics SL/HL]
Paper 1B - Random and systematic error [IB Physics SL/HL]

Paper 1B - Random and systematic error [IB Physics SL/HL]
Paper 1B - Calculating uncertainties [IB Physics SL/HL]

Paper 1B - Calculating uncertainties [IB Physics SL/HL]
Paper 1B - Significant figures [IB Physics SL/HL]

Paper 1B - Significant figures [IB Physics SL/HL]
Good luck with your May 2025 exams!

Good luck with your May 2025 exams!
E3.1 Alpha, beta, gamma decay [IB Physics SL/HL]

E3.1 Alpha, beta, gamma decay [IB Physics SL/HL]
E1.3 Emission and absorption spectra [IB Physics SL/HL]

E1.3 Emission and absorption spectra [IB Physics SL/HL]
E1.5 HL Bohr model for hydrogen [IB Physics HL]

E1.5 HL Bohr model for hydrogen [IB Physics HL]
E5.4 Distance to stars [IB Physics SL/HL]

E5.4 Distance to stars [IB Physics SL/HL]
E2.5 HL Compton scattering [IB Physics HL]

E2.5 HL Compton scattering [IB Physics HL]
E3.2 Exponential decay [IB Physics SL/HL]

E3.2 Exponential decay [IB Physics SL/HL]
E4.2 Nuclear power plants [IB Physics SL/HL]

E4.2 Nuclear power plants [IB Physics SL/HL]
E2.2 HL Photoelectric effect 2 [IB Physics HL]

E2.2 HL Photoelectric effect 2 [IB Physics HL]
E2.4 HL Wave particle duality [IB Physics HL]

E2.4 HL Wave particle duality [IB Physics HL]
E5.3 Evolution of stars [IB Physics SL/HL]

E5.3 Evolution of stars [IB Physics SL/HL]
E5.5 Stellar radius [IB Physics SL/HL]

E5.5 Stellar radius [IB Physics SL/HL]
E3.5 HL Nuclear stability and strong nuclear force [IB Physics HL]

E3.5 HL Nuclear stability and strong nuclear force [IB Physics HL]
E2.3 HL Evidence of wave or particle behaviour [IB Physics HL]

E2.3 HL Evidence of wave or particle behaviour [IB Physics HL]
E3.4 Binding energy per nucleon [IB Physics SL/HL]

E3.4 Binding energy per nucleon [IB Physics SL/HL]
E2.1 HL Photoelectric effect 1 [IB Physics HL]

E2.1 HL Photoelectric effect 1 [IB Physics HL]
E3.3 Binding energy E=mc^2 [IB Physics SL/HL]

E3.3 Binding energy E=mc^2 [IB Physics SL/HL]
E5.1 Fusion and stability of stars [IB Physics SL/HL]

E5.1 Fusion and stability of stars [IB Physics SL/HL]
E1.4 HL Nuclear radius and closest approach [IB Physics HL]

E1.4 HL Nuclear radius and closest approach [IB Physics HL]
E1.1 Nuclear physics and energy levels [IB Physics SL/HL]

E1.1 Nuclear physics and energy levels [IB Physics SL/HL]
E5.2 HR diagrams [IB Physics SL/HL]

E5.2 HR diagrams [IB Physics SL/HL]
E3.6 HL Decay constant and more detailed equations [IB Physics HL]

E3.6 HL Decay constant and more detailed equations [IB Physics HL]
E1.2 Geiger Marsden Rutherford experiment [IB Physics SL/HL]

E1.2 Geiger Marsden Rutherford experiment [IB Physics SL/HL]