Place Value Merry Go Round aligns with the Common Core Standards 1.NBT.1 and 1.NBT.2. While I used this with first grade mathematicians it could certainly be used with second graders as well. This is an excellent small group activity for place value. Set up a Merry Go Round in your classroom using a large table or set of desks. At each seat provide students with a model of a two-digit number using manipulatives such as ten frames and counters, base ten blocks, etc. Students must "read" the model and then record what they "see" in the place value frame. Next, they accurately write the two digit number. To add self-assessment, place an index card at each seat on the Merry Go Round. Students can flip over the index card to assess their understanding and color in the matching smiley face. Use a bell to assist students in rotating around the math Merry Go Round. My students love doing this type of hands-on-activity!