With this fun deck, students practice distinguishing between open and closed shapes. Total cards: 32 Boom Cards™ are:-super Interactive -colorful and fun -paperless -self-grading -instant feedback -great for interventions -can be used over and over again -can be used for one-on-one or with the whole class work -print option available -interactive whiteboard -very easy to use-even for tech-challenged individuals ; ) Boom Cards™ can be easily used with Google classroom or seesaw and much more!***