The teacher should put terms and definitions on index cards as a key for calling out. Students will use both cards for a few rounds using beans to mark their cards. After students become familiar with terms and definitions tell them to put the definitions card away. Using the terms card ONLY, the teacher will call out the definitions without the terms. Students must recall the terms that match the teachers definitions and mark their card.
Every card is in a different arrangement.
This is useful if you think the students are memorizing the position of the term or definition on their original cards.