This powerpoint review is PERFECT for math centers! It covers place value and rounding. On each slide there are a couple of questions and then a sound file in the bottom right corner that not only tells the correct answer, but EXPLAINS it too! It also gives a few goofy prompts for the students to take part in if they get the answer right!
I made this for my kids to use during centers to help free me up to work with other groups. My students knew if they needed additional explanation/help, they could ask. They were charged with the task of listening to the sound file and trying to figure it out themselves BEFORE they asked me, though! Not only did they learn a lot, they had a bunch of fun doing it! :)