A good hands on activity is to have a minimum of 4, max of 8 blow up globes. Black out the room, with only a lamp in the middle /no shade. Have a north star point so that the north pole points in that direction (have it be approx imately at the level to the Earth's axis has a tilt). Have 4 X's on the floor where students would stand with the globes with the north pole pointing towards the north star. Show how the tilt is always the same, but dependong on where the Earth is in relation to the sun, the north pole can be tilted towards the sun (summer) or away from the sun (winter) and in between is the summer or fall. Students can move with their earth around the sun to see how the light hits different parts of the earth at diffeent times. If you used 8 globes, the other 4 would be the in between phases of the soltices and equinoxes.
I hope that made sense.