This activity is great to generate ideas before starting a lesson on money. My kids would beg me to do the Venn diagram every day. Another great idea to go along with this is playing a money song in the background. My favorite unit in Math is money and I know you will love this comparing coins activity as much as I do. This activity can be done whole group, small group, or individual work. For the younger students I would introduce this whole group first. I hope you enjoy!