There's a good chance you could improve your teaching if you were to:
- emphasising that there is movement as radiations travel from source to detector
- ensuring that radiating is presented as a unifying mechanism, across families of radiations
- using a simple, but evocative description of radiating, such as
do like me, but later
- consistently characterising waves by their frequency and amplitude
- being consistent about the energy in stores and the power in pathways
- giving examples of the full range of media for each family of radiations
- explicitly modelling situations with ray diagrams
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.
- referring to
- not implying that light simply
- conflating rays with physical objects
- not making unifying connections between different phenomena
These difficulties are distilled from: the research findings; the practice of well-connected teachers with expertise; issues intrinsic to representing the physics well.
This appears as Ra01TL as Ra01TLnugget13 in the full materials.