This video provides a good explanation and visual diagram of constellations and how earth's view of the stars change as the earth orbits the sun. The universe in a box activity is good because it helps reinforce the lesson that the constellations change depending on the season. The activity can be replicated by drawing out the box pattern and circle if printing the pages are an issue. Also, if students do not have brads, they can make one with the paper by drawing two small trapezoids with the short ends facing each other and long sides facing away so that they look like wings at the center of the sun. Then at the center of the circle with a notch cut out, cut a small circle so that the wings from the trapezoid can be pulled through the circle and secured just like a brad.