Thinking about actions to take: Sources of Ionising Radiation
Teaching Guidance for 14-16
There's a good chance you could improve your teaching if you were to:
- dealing with the properties of ionising radiations before dealing with the sources
- building up a simplified model of the atom, as needed
- introducing a wide variety of sources, not only nuclear
- building and discussing models of exponential decay
- relating emissions to transmutations
- exploiting a good model of energy, discussing changes in the nuclear store
Work through the Physics Narrative to find these lines of thinking worked out and then look in the Teaching Approaches for some examples of activities.
- not drawing attention to the vastly different energies of photons with nuclear and atomic origins
- not emphasising the nuclear origins of the ionising emissions
- using the term
- keeping the different representations of exponential decay separate, rather than relating them
negative energy, when accounting for nuclear transformations
These difficulties are distilled from: the research findings; the practice of well-connected teachers with expertise; issues intrinsic to representing the physics well.