Thinking about the learning
A reference to everyday life: We get day and night so that we can sleep at night and do things in the day.
Simple blocking explanations: These explanations all involve something getting in the way of the Sun, blocking its light and thereby creating the darkness of night. Common wrong tracks include arguing that the Moon, clouds or hills and mountains cause Sunlight to be blocked.
Sun orbiting the Earth: Here the Earth is stationary and the Sun is in an orbit around it. According to this view, day-time comes when the Sun is on
your side of the Earth and night-time when it is on the opposite side. For this model to work the Sun must orbit the Earth once a day.
Earth orbiting the Sun: Here the Sun is stationary and the Earth is in orbit around it. According to this view, day-time comes when
your side of the Earth faces towards the Sun and night-time when it faces away from the Sun. It's the orbiting of the Earth around the Sun that is used here to explain day and night. For this model to work, the Earth must orbit the Sun once per day and also maintain the same orientation (facing the same way) in space, with no spinning. Here is a caricature of this suggestion.
Thinking about the teaching
Here the Earth is spinning on its axis in front of the Sun, once every 24 hours. According to this view, day-time comes when
your side of the Earth is facing towards the Sun and night-time when it faces away from the Sun. Here is a caricature of the model.