Hey there Southern Teacher~
I was just wondering if you have been using Whole Brain Teaching and the 5~step lesson plan already? Only because you will find that you be "buying back" many instructional minutes with less time used on Classroom Management, transitions, reteaching, re~explaining, etc. And don't forget that mind soccer is a review of what you just taught so it is a great way to check for understanding. As Jeff and Chris pointed out~ you can spread out the rewards~ if you need to. One great way to do that is to check out the "Mystery Road". Farrah shared at the national conference that when she used the "mystery road", there were times that the class "somehow" made it to the "mystery prize" (this will make sense when you check it out~ I believe it was on the "Scoreboard Webinar") it "just so happened to be" when she was on Step 4 of the lesson. Since in Step 4 you are essentially checking for understanding~ she could use this as a replacement for the "yes~no way". The kids loved it!!!
Also wanted to add to Chris' variation "You bet your talking time"~ I have heard that another one that works really well is when the kids get to sit where they want. You can add that in to the talking time (after that one is not as exciting~ because you will need lots of tools in your backpocket...cuz as we say "it's a LONG year") OR you can use it to bank up points for a long term reward and work towards sitting where you want for an entire lesson (oh my!). For long term rewards~ they "bank" points on the days they win. They get one point each time they win the scoreboard. Then you determine how many points the reward is worth. Once they get the amount~ they get the reward
Lastly, I wanted to encourage you~ you really have a cool set~up by having the two sets of kids. Here is why~ you keep the scoreboards up (have two~ one for each group). They will naturally compete against each other. And the day when one group gets the reward and the other one doesn't.......look out.....the competition will be fierce!
Have fun, keep us posted on how it works out