Peer instruction is a simple routine that changes how students engage with ideas. You pose a conceptual question, students answer on their own, then they discuss with classmates and answer again. During the discussion, students explain their reasoning to each other, and the class often moves toward the right answer before you have said a word.
Live polls make the routine fast and visible. Here is how to run it, step by step.
The basic cycle
- Pose a concept question. One multiple-choice question that targets understanding, not recall.
- Individual vote. Students think quietly and answer on their own.
- Check the spread. Look at the results yourself before showing them to the class.
- Peer discussion. Students turn to a neighbor, ideally someone who chose a different answer, and try to convince each other.
- Second vote. Students answer the same question again.
- Debrief. Reveal the results, discuss the correct answer, and address any remaining confusion.
The whole cycle can take as little as five to ten minutes.
Step 1: Write a good concept question
The question is the engine of peer instruction. A good one:
- Targets one key idea, not a calculation or a memorized fact.
- Has plausible wrong answers based on real misconceptions.
- Can be answered in a minute or two of thinking.
- Is genuinely debatable for students who are still learning the topic.
For example, in physical science: "A heavy ball and a light ball are dropped from the same height at the same time. Ignoring air resistance, which one hits the ground first?" Many students' intuition says the heavy ball, which makes it a perfect discussion starter.
In literature: "Which of these best describes the narrator's attitude toward the town in chapter one?" with options that each reflect a defensible but different reading of the text.
Step 2: The individual vote
Give students a minute to think on their own and ask them not to talk yet. This first answer matters because it commits each student to a position, which makes the discussion that follows far more meaningful.
Tip: Ask students to jot down a few words about why they chose their answer. It gives them something concrete to share in the discussion.
Step 3: Read the results and decide
Before projecting the results, look at the spread yourself. What you see determines what happens next:
- Most students are correct: a quick explanation is enough. Discussion would add little.
- Answers are split: this is the sweet spot for peer discussion. Move to step 4.
- Most students are wrong: discussion may just spread the misconception. Reteach the idea, then try a similar question.
Holding back the results at this stage is important. If students see that most of the class picked B, many will switch to B without thinking it through.
Step 4: Peer discussion
Ask students to find someone who chose a different answer, or simply turn to a neighbor. Their task is to explain their reasoning and try to convince their partner.
Walk around and listen. You will hear misconceptions in students' own words, which is invaluable for your debrief. Keep the discussion to two or three minutes so the energy stays high.
Step 5: The second vote
Ask the same question again. Students can change their answer or stay with their original choice. Often the class shifts toward the correct answer, because students who understand the concept tend to give more convincing explanations than those who are guessing.
Step 6: Debrief
Now reveal both sets of results. Comparing the first and second votes is powerful for students: they can see how discussion changed the class's thinking.
Walk through the correct answer and, just as importantly, explain why each wrong answer is tempting. Invite a student who changed their mind to share what convinced them. If the second vote is still split, that is useful information too; plan a follow-up question for the next lesson.
Making it a routine
Peer instruction works best as a regular part of class rather than an occasional event. Students get better at explaining and listening, and the discussions get sharper. One or two concept questions per lesson is a good rhythm.
It helps to collect your best concept questions as you go. A question that produced a lively split this year will probably do the same next year.
Peer instruction in LetMeAdd
LetMeAdd's multiple-choice and poll questions work well for peer instruction. Students join with a 6-character code or QR code, with no account needed, and answer from their own devices. Add the same question twice in your presentation, once for the first vote and once for the second, so you can compare both sets of results after the discussion. A timer helps keep the thinking and discussion phases on schedule.
If you teach several sections, run each class as a separate live session within the same event. Each session keeps its own results, so you can compare groups later.
Explore how live polling works in the classroom.
Run your first peer instruction cycle: sign up for LetMeAdd.