High-Low - a math game

Last week, Wednesday, I got to teach a math game to the students in class. I learned it from my math course the previous night. I passed out half-sheets of paper with place value slots upto 100 million. Each student received a dice. Each student was to roll his/her dice and place the value in a slot to create a nine digit number. The goal was to see who could come up with the highest number. Then we did the same with the lowest number. The students were engaged, and read out their numbers accurately. It went quite well. Although, it fizzled at the end. I didn't have much of a closure. My master teacher gave me some feedback. She said that I needed to set the standard that they were to keep their dice on their desk after they were done, and not keep playing with it. Also, for closure, it would have been a good idea to ask the class what strategies they used when they were forming their numbers. I get to do the same game next Tuesday, so hopefully, it will be better the second time around. It was a fun learning game that my master teacher allowed me to do.
Image from: Stock Xchange