Different presentations and worksheets to use, was used with a low ability class

PowerPoint attached is whole lesson plan with a simple starter activity. Presentation has lots of information which can be used to talk students through, or printed off to use as posters for around the room. Worksheet for students to fill in with the discoveries. Stretch ideas used, and plenary is an exam question for either self or peer assessment. Final slide can be used for homework to engage students

Lesson with starter based upon previous lesson about the structure of the atom. Short break down on how to calculate number of protons, neutrons and electrons from mass number. Opportunity for peer assessment with worksheet. Fun game for plenary to consolidate learning