I loved the activity where students make their own constellations. In order to adapt it for junior classes, I would stick the constellation pages onto the card and cut the string to the correct length before the lesson. To start we would discuss stars and whether they know the names of any stars. I would show them some pictures of constellations and ask what shapes they see. I would show them a picture of the plough alongside a photo of an actual plough, we would compare them. I would have the children complete the hands-on activity of making their constellation as shown in the video with tin foil, blue tack and string. When they are finished we would talk about the differences between looking at the constellations from different angles, what do they notice. I would also ask them if they think it looks like anything else other than a plough. To finish we could discuss any other shapes or pictures that they see in their constellations.