There's a good chance you could improve your teaching if you were to:
integrating your current model of energy
introducing a range of frequency dependent phenomena
developing and exploiting a photon model of radiating
linking radiating to the other three pathways (electrical, mechanical, heating by particles)
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.
wave–particle duality arguments of early last century
making quantum physics too mystical
using the photo-electric effect as the central phenomena in introducing photons
These difficulties are distilled from: the research findings; the practice of well-connected teachers with expertise; issues intrinsic to representing the physics well.
Prepare for teaching across the topic using these links
topic kitset topic path core ideas (topic) decisions to make (topic) suggestions (for the topic) topic issues
This is a nugget in the TL thread – connect all three threads from any link
Physics Narrative (PN) Teaching & Learning Issues(TL) Teaching Approaches(TA)