Also on these boards
This "I'm done..." board is a great way to remind students of their choices once they have completed the current activity. By having this posted as a bulletin board or poster within the room, students would have a visual reminder of the acceptable options they have while awaiting transition to the next activity. This procedure would help maintain order as well as keep faster students busy.
NGC 6357: Cathedral to Massive Stars Image Credit: NASA, ESA and Jesús Maíz Apellániz (IAA, Spain) Explanation: How massive can a normal star be? Estimates made from distance, brightness and standard solar models had given one star in the open cluster Pismis 24 over 200 times the mass of our Sun, nearly making it the record holder.