PowerPoint includes 10 questions appropriate for high school and first year college chemistry courses. Questions cover basic rules of identifying which numbers are significant and how to deal with significant figures in calculations. The questions can be used with any classroom response system (iClicker, eInstruction, TurningPoint, Poll Everywhere, REEF Polling), IF-AT scratch-off cards, or have students record answers on paper. Clicker questions are a powerful tool to get student feedback duri