Use small whiteboards for formative assessments during class instead of clickers because they have a low overhead to get up and running and they allow you to quickly gauge student progress.

Bring whiteboards and markers for students with you to class.

Alternative: You can use sheet protectors over a piece of cardstock as a cheap alternative.

Give each student a small whiteboard and dry erase marker.

Give the class a problem to solve and ask students to write their answer on their board.

You can use all of the students’ answers to guide your instruction.