We printed these codes and placed them around the room. The students visited the codes to get the problems. They solved the problems and recorded their answers on their recording sheet. I have done this in several 2nd grade classrooms. We have done it in pairs or individually. Students have left their record sheets on their desk and taken their ipads to scan the codes and returned to their desk to do the math. In some instances the students have taken their record sheets with them to the codes with a clip board. It has been highly successful. Students were engaged and motivated. We have also done it in small groups or as a center. Students can use iPads, tablets, or any scanning device. Computers or laptops can also be used to scan the codes.