Not addressed to the student.
Teach the four causes as a sequence, not a list. The student has met them all in ground school and can recite them. What they have not done is feel gyroscopic precession arrive on its own, two seconds after the others, at the moment the tail comes up. Name it out loud in the airplane as it happens. That single callout is worth more than the ground lesson.
Demonstrate the three-point first and the wheel landing second, with enough separation that they do not blur. Say what is different before each one, and ask afterwards rather than telling.
Directed performance means hands on, not hands off. The student flies the approach and you take the last part. Say where the handover is before you fly it, so the transfer is planned rather than a surprise.
Hold the go-around rule absolutely, including when you would not have. A student who sees the instructor accept a small bounce has learned that the rule has exceptions, and they will find their own. There are two lessons left before they are landing this airplane in a crosswind.
Watch the tail-lift attitude closely. This is the first lesson where a control input can put the propeller near the pavement, and a student who over-rotates once tends to under-rotate for the rest of the flight.