What does it mean when something is fair? Not fair? Quiet thinking. Turn and talk. Share out. Give example(s).
Explain activity – you will show a picture of two students’ coin amounts and they will have to decide whether or not they think it is fair or not fair.
Teach children the signals for showing whether the coin value is fair or not fair (thumbs up if the coin value is considered fair and thumbs down if the they do not consider the coin value to be fair.)
Show the image quickly. (Not so quickly at first). You can do 2-4 slides a day. (promoting subitizing, working toward derived facts)
You can either go through the series of pics you chose for the day and then go back to discuss math thinking, stop when there seems to be disagreement or when you want to ask questions to challenge student thinking.