The cards are easy to download (free) and can be added to card stock easily. Each student is assigned a specific card # ad the card is held in a specific way related to the answer to the question.
PE Organization...
This is a picture of the pocket chart I use to organize my Plickers cards. This setup allows me to assign each student a specific card for each class. This organizer is easy to move and easy for the students to find and keep their cards in good shape.
Plickers App...
The App is free. You can find it under the iPhone Apps in the iTunes Store. It is available in Android too. I have this App on my iPad and iPhone.
"How To" video created by Ben Pirillo regarding Plickers
Example questions that I have used in my classroom with my K-5 students.