A complete, free lesson pack for IB Diploma Physics HL (topic E.2, first assessment 2025). Everything is editable and every answer is fully worked.

What’s included

• Student worksheet (editable Word + print-ready PDF): 10 original questions, 49 marks, in three sections of increasing difficulty
• Answers with mark allocation for every step
• Exit ticket: three questions, two copies per page, with answers
• Editable PowerPoint lesson slides: the complete topic notes (definitions, equations, worked examples, diagrams, exam tips, quick-check questions with answers) plus the exit ticket
• Teacher guide: learning objectives, a 60-minute lesson plan, common misconceptions, differentiation ideas

Topics covered: The photoelectric effect, work function and stopping potential, determining the Planck constant, matter waves and electron diffraction, Compton scattering and photon momentum.

Time: one 60-minute lesson, or part in class and Section C as homework.

All questions, answers, notes and diagrams are original. Licensed CC BY-SA 4.0: share and adapt freely, with credit.

Independent resource · Not endorsed by the IBO.