Create a "Parking Lot" for your students on large paper / poster board. Each child will need a small square (about the size of a post-it) with their name at the top of the square. Print, cut out the squares, and give each student a number they must build using base ten place value pieces. The students must draw the 10s and 1s for the number you give them. The parking lot is wonderful because students must do their own work, then tape it to the board. Once they are up, a student may sit back down to copy another student's work.