Inquiry-based learning: 4 levels, examples, and 5 strategies

You finish explaining the topic, look up, and ask the room: "Any questions?"

Silence. Someone shuffles a notebook. You move on.

That silence isn't a sign students understood everything. Classrooms are just set up for teachers to ask and students to answer. In a classic study, Arthur Graesser and Natalie Person found that students asked questions roughly 240 times more often in one-to-one tutoring than in a regular classroom [1]. The curiosity is there. The format usually shuts it down.

Inquiry-based learning flips that arrangement. Students start from a question, a problem, or a puzzling observation, and investigate it themselves. Below, we cover what inquiry-based learning is, what the research says about it (including where it goes wrong), the four levels of inquiry, and five practical strategies. We also share new data from 12,865 educators showing how few of them build slides that let students set the questions, and what to do about it.

What is inquiry-based learning?

Inquiry-based learning is a teaching approach where students build understanding by asking questions, investigating, and drawing conclusions from evidence, instead of receiving finished answers from the teacher. The idea goes back to John Dewey, who argued that people learn best when they work through real problems.

In an inquiry classroom, the teacher shifts from lecturer to designer and guide. You still plan the learning, but students do more of the thinking.

Key features of inquiry-based learning:

• Questions come first. The lesson is built around an open question or problem instead of a list of facts to cover.
• Students investigate. They gather evidence through experiments, sources, data, interviews, or observation.
• Thinking is visible. Students explain their reasoning, share it, and revise it when new evidence turns up.
• Collaboration matters. Students test ideas against each other, so peer discussion is part of the method.
• Reflection closes the loop. Students look back at what they found and how they found it.

Inquiry-based learning overlaps with project-based learning, problem-based learning, and discovery learning. The difference is emphasis: inquiry is about the question and the investigation, whatever the final product looks like.

Does inquiry-based learning work? What the research says

Short answer: yes, especially when students get guidance. Left to figure it out alone, they usually learn less than with explicit teaching.

• A meta-analysis of 37 experimental and quasi-experimental studies by Furtak and colleagues (2012) found an average effect size of 0.50 for inquiry-based science teaching [2]. Studies with teacher-guided activities showed larger effects than those where students led on their own.
• Lazonder and Harmsen (2016) pooled 72 studies and found that guidance during inquiry improved learning outcomes (d = 0.50) and helped students carry out inquiry activities more successfully (d = 0.71) [3].
• Alfieri and colleagues (2011) analyzed 164 studies of discovery learning. Unassisted discovery did worse than explicit instruction (d = -0.38). Enhanced discovery, with scaffolds, feedback, and worked examples, did better than other methods (d = 0.30) [4].

A widely cited critique by Kirschner, Sweller, and Clark (2006) argues that minimal guidance overloads novices' working memory [5]. That critique and the meta-analyses point the same way: inquiry works as a guided activity, not a hands-off one. "Let them discover it" is not a lesson plan.

In practice, that means you keep the structure and hand students more of the question-asking. Stepping back and hoping curiosity takes over is the version that fails.

Why inquiry is still rare: what 12,865 educators' slides show

We wanted to know how often educators make room for student questions. So we looked at 12,865 teachers, lecturers, and trainers who built slides in AhaSlides between late June and late September 2026, and checked which types of interactive slides they created [6].

Educators ask far more questions than they invite.

• 62% built at least one quiz, a format where the teacher owns both the question and the correct answer.
• 29% built any open-inquiry slide: an open-ended question, a Q&A, or a brainstorm.
• 7.9% built a Q&A slide, the format designed for students to set the questions.

Quizzes have their place. Retrieval practice has strong research support [7], and checking understanding matters. But the numbers show where the default lands: when educators reach for interaction, the most common choice is a quiz: a question they already know the answer to.

We get it. Inquiry feels risky. Open questions take longer, you can't predict the answers, and a quiet class makes an open question feel like a failure. A quiz is safe and fast.

Swapping every quiz for a free-for-all would go against the research above. A better fix is smaller: add a few structured moments where students come up with the questions, then guide them toward answers. The five strategies below work that way.

About this data: Profession is self-reported at sign-up, and about 37,000 users with no profession set were excluded. The data measures slides created, not slides presented or student responses. It covers one 90-day window over the Northern Hemisphere summer and back-to-school period.

The 4 levels of inquiry-based learning

Inquiry isn't all or nothing. Heather Banchi and Randy Bell's four levels of inquiry describe a scale based on how much information the teacher provides. Each step up hands students more control [8].

1. Confirmation inquiry

Students confirm a principle they've already learned, following steps that lead to a known result. Example: after learning that plants need light, students run a quick experiment to check it. This builds lab and research skills without the pressure of the unknown.

2. Structured inquiry

You give the question and the procedure, but students don't know the result. Example: "How does the length of a pendulum affect its swing?" Students follow your method and work out the relationship from their own data.

3. Guided inquiry

You provide the question. Students design how to answer it. Example: "What caused the 1929 stock market crash?" Students choose which primary sources to examine and how to weigh them.

4. Open inquiry

Students choose the question, design the investigation, and present their conclusions. This looks most like real research, and it takes the most readiness. It works best after students have practiced the lower levels.

Many classroom activities sit at levels 1 and 2. That's fine. The aim is to move up a level when students are ready, not to jump straight to open inquiry and watch it stall.

Inquiry-based learning examples

Inquiry can work in any subject and at any age, including university seminars and adult training.

• Science: Students test what affects plant growth, how fast ice melts in different liquids, or which paper towel is most absorbent.
• History: Students act as historians, comparing primary sources to build and defend a theory about why an event happened.
• Literature: Small groups read different short stories, then pose discussion questions for the rest of the class.
• Math: Instead of a formula, students get a real data set (school lunch waste, commute times) and decide which questions the data can answer.
• Current events: Students pick an issue, research it from varied sources, and propose solutions. A structured student debate is a strong way to test their evidence.
• Higher education: Lecturers open a seminar with a case and let students list the questions they'd need to answer before making a call.
• Workplace training: Trainers present a real customer complaint and ask learners to work out what went wrong before introducing the process.

5 inquiry-based learning strategies for your classroom

These strategies follow the research: give students more of the questions, and keep the guidance.

1. Start with a phenomenon, not a lecture

Open with something that makes students curious: a surprising photo, a short video, a strange data point, or an object. Then ask one open question, like "What do you notice?" or "What's going on here?"

Collect answers on an open-ended slide so every student responds, not just the confident three in the front row. Quieter students often have the most interesting observations.

Keep this step short, five minutes at most. Its only job is to create a need to know.

2. Let students generate the questions

This is the step most lessons skip, and the one our data shows is rarest. Instead of posing the inquiry question yourself, have students produce their own.

A simple routine, adapted from the Question Formulation Technique [9]:

1. Show a focus prompt (an image, statement, or problem).
2. Students write as many questions as they can, without stopping to judge or answer them.
3. They sort questions into closed (yes/no) and open.
4. The class picks the two or three questions most worth investigating.

A Q&A slide works well for this. Students submit questions from their phones, anonymously if you turn on anonymous questions, and upvote the ones they most want answered. The best questions rise to the top, and you can see at a glance what the class is curious about.

Anonymity can help. Students who would never raise a hand will type a question when no one knows it's theirs.

3. Scaffold the investigation

This is where guidance earns its keep. Before students dive in, give them:

• A clear time limit and a deliverable ("a one-slide answer with two pieces of evidence")
• A curated set of sources or materials, so they're not lost in search results
• Sentence starters for hypotheses ("I think... because...")
• Roles for group work: researcher, skeptic, note-taker, presenter

Match the scaffolding to the level. Structured inquiry needs a full procedure. Guided inquiry needs resources and checkpoints. Pair work helps here too; think-pair-share gives students a low-stakes way to test ideas before sharing with the class.

4. Check in often

Inquiry can drift. Short check-ins keep it on track and show you who needs help.

• Run a quick classroom poll: "How confident are you in your hypothesis?"
• Ask for a word cloud: "One word for what's confusing you right now."
• Circulate and ask each group: "What's your evidence for that?"

This is also a natural place for a quiz. Once students have investigated, a few retrieval questions help lock in the key facts they uncovered. Quizzes and inquiry work well together. The problem is only when quizzes are the whole lesson.

5. Share findings and reflect

Have students present what they found, including what surprised them and what they'd investigate next. Classmates respond with questions. Polite applause doesn't count.

Finish with a short reflection:

• What did you believe before, and what do you believe now?
• Which piece of evidence changed your mind?
• What new question do you have?

A brainstorm slide collects everyone's "next questions," and students can vote on which one the class should pick up next time. That turns reflection into the start of the next inquiry.

For more ways to structure feedback, see these peer assessment examples.

Try it in your next lesson: AhaSlides lets you combine open-ended, Q&A, brainstorm, poll, and quiz slides in one deck, so you can move from curiosity to investigation to a knowledge check without switching tools. Students join from their phones with a code.

Common mistakes to avoid

• Too little guidance. Pure discovery frustrates novices and underperforms explicit teaching. Scaffold first, then remove supports.
• Fake open questions. "What is the capital of France?" dressed up as inquiry is still recall. A real inquiry question has more than one reasonable path to an answer.
• Skipping the student questions. If you always set the question, you're running structured inquiry at best. Build in at least one moment where students ask.
• No closure. Investigation without a summary leaves students unsure what they learned. Always end by pulling out the key ideas.

Inquiry is one form of active learning. For more ways to build student-centered lessons, browse our interactive classroom activities guide or these fun questions to ask students as warm-ups.

FAQ

What are the 4 types of inquiry-based learning?

The four types, or levels, are confirmation, structured, guided, and open inquiry. They differ in how much the teacher provides: at the confirmation level, the teacher gives the question, method, and expected result; at the open level, students choose the question and design the whole investigation.

What are the 5 steps of inquiry-based learning?

A common model is the 5E cycle: engage, explore, explain, elaborate, and evaluate. Students get curious, investigate, explain what they found, apply it in a new context, and then reflect on their learning.

What is an example of inquiry-based learning?

Instead of telling students why leaves change color, a teacher shows photos of the same tree across seasons and asks what students notice. Students generate questions, research or test possible explanations, and present their conclusions with evidence.

Is inquiry-based learning effective?

Research supports it when students are guided. A 2016 meta-analysis of 72 studies found that guidance during inquiry clearly improved learning outcomes [3], while a 2011 review of 164 studies found that unassisted discovery did worse than explicit instruction [4].

What is the teacher's role in inquiry-based learning?

The teacher designs the inquiry, picks the starting prompt, provides resources and scaffolds, checks progress, and helps students draw conclusions. You guide the thinking rather than supplying the answers.

Can inquiry-based learning work with adults?

Yes. The Alfieri meta-analysis found that adults gained more from enhanced (guided) discovery than children did [4]. Trainers and lecturers can use case-based questions, real workplace problems, and student-generated questions in the same way.

Sources

[1] Graesser, A. C., & Person, N. K. (1994). Question asking during tutoring. American Educational Research Journal, 31(1), 104-137. https://doi.org/10.3102/00028312031001104

[2] Furtak, E. M., Seidel, T., Iverson, H., & Briggs, D. C. (2012). Experimental and quasi-experimental studies of inquiry-based science teaching: A meta-analysis. Review of Educational Research, 82(3), 300-329. https://doi.org/10.3102/0034654312457206

[3] Lazonder, A. W., & Harmsen, R. (2016). Meta-analysis of inquiry-based learning: Effects of guidance. Review of Educational Research, 86(3), 681-718. https://doi.org/10.3102/0034654315627366 Free full text

[4] Alfieri, L., Brooks, P. J., Aldrich, N. J., & Tenenbaum, H. R. (2011). Does discovery-based instruction enhance learning? Journal of Educational Psychology, 103(1), 1-18. https://doi.org/10.1037/a0021017 Free full text

[5] Kirschner, P. A., Sweller, J., & Clark, R. E. (2006). Why minimal guidance during instruction does not work: An analysis of the failure of constructivist, discovery, problem-based, experiential, and inquiry-based teaching. Educational Psychologist, 41(2), 75-86. https://doi.org/10.1207/s15326985ep4102_1

[6] AhaSlides (2026). How educators build interactive lessons: slide creation by 12,865 self-identified teachers, lecturers, and trainers, June 24 to September 22, 2026. Internal product analytics.

[7] Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J., & Willingham, D. T. (2013). Improving students' learning with effective learning techniques: Promising directions from cognitive and educational psychology. Psychological Science in the Public Interest, 14(1), 4-58. DOI: 10.1177/1529100612453266. PubMed

[8] Banchi, H., & Bell, R. (2008). The many levels of inquiry. Science and Children, 46(2), 26-29.

[9] Right Question Institute. What is the QFT? https://rightquestion.org/what-is-the-qft/