Plickers lets you poll your class for free, without the need for student devices. Just give each student a card (a “paper clicker”), and use your iPhone/iPad or Andriod device to scan them to do instant checks-for-understanding, exit tickets, and impromptu polls. Best of all, your data is automatically saved, student-by-student, at plickers.com. You can enter your own questions, or copy and past questions from other online sources. It's an awesome assessment tool! Each card has A,B,C & D around the edge of the black shapes. Simply ask students a multiple choice question, they respond by holding the card with their A-D answer up at the top. Students can see results instantly. All students are engaged at all times! Students can collaborate and debate about why an answer would be the best choice. With the collaboration in place, vocabulary and oral communication is being addressed as well and concept understanding.