I gave each partnership a number line and a small bear counter. Students sat back to back with no peeking. One partner placed the bear on the number line and the other partner had to figure out what number the bear was on. This started off a little rocky with students just guessing numbers over and over again, even after a couple demonstrations. Once I found a partnership asking and answering questions back and forth, I had them do another demonstration. Things went much better after this demonstration!
Here is an example (bear is on number 7):
Student 1: "Is the bear on 3?"
Student 2: "No, it is higher."
Student 1: "Is the bear on 5?"
Student 2: "No, it is even higher than five."
Student 1: "Is the bear on 10?"
Student 2: "No, it is lower than 10."
Student 1: "Is the bear on 8?"
Student 2: "No, it is one less than 8."
Student 1: "The bear is on 7!"
This game is going to be added to our math center this week, but students will be facing one another with a barrier rather than back to back because centers can be a little bit loud anyway.
What other fun, simple games do you suggest? It looks like we are going to be game lovers this year!