Design an inquiry-based science lesson for secondary school

Context

A secondary science teacher (grades 7–10) who wants to design an inquiry-based lesson: one where students arrive at the concept through exploration, not passive reception.

Originally written for Chilean classrooms. References to "Bases Curriculares" and learning objective codes apply to the Chilean national curriculum. Replace with your school's curriculum framework.

Paste first

Before writing the prompt, have ready:

• The specific learning objective you want to address (exact text from your curriculum)
• The time available (45, 60, or 90 minutes)
• The lab materials or physical resources available at your school (don't assume you have everything)
• Your class's approximate level of experience with inquiry-based learning

You are a science teacher with training in inquiry-based education. Help me design a lesson to teach the following content using the inquiry cycle (question → exploration → explanation → elaboration → evaluation).

**Lesson details:**
- Grade level: {{grade, e.g. "Grade 8"}}
- Learning objective: {{paste the exact text of the objective}}
- Class duration: {{duration in minutes}}
- Available resources: {{list specific materials — pipettes, beakers, vinegar, soil from the schoolyard, phones, etc.}}
- Class experience with inquiry learning: {{none / some / experienced}}

**What I need:**

1. An **inquiry question** accessible for this level (the answer shouldn't be in the question — it should spark genuine curiosity).
2. The **lesson sequence** divided into the 5 phases of the cycle, with estimated time for each phase.
3. Two or three **closing questions** to assess whether students reached the central concept.
4. An **alert signal**: what common misconceptions might this activity reveal? Name them so I can watch for them during class.

Don't give me a complete lab protocol — give me the skeleton so I can adapt it to my context. If any step requires materials I haven't mentioned, ask me before assuming.

Expected output

**Inquiry question:** Why do some objects float and others sink even when they're the same size?

**Sequence:**
- Hook (10 min): show two objects of equal volume but different material — ask what will happen before submerging them.
- Exploration (20 min): groups submerge objects and record observations without teacher explanation.
- Explanation (15 min): each group presents their hypothesis; teacher anchors to the concept of density.
- Elaboration (10 min): students predict what will happen with a third object before testing it.
- Evaluation (5 min): individual paper response — 2 questions.

**Alert signals:**
- Confusion between weight and density (very common at this level)
- Attributing buoyancy to size rather than mass per unit volume

Watch out for

• Don't paste student names or class records. Use generic descriptions ("heterogeneous class with some students below grade level in reading").
• The model may suggest lab materials you don't have. Be explicit about what you have — a simple experiment that works beats a sophisticated one you can't run.
• The 5E cycle is a guide, not a straitjacket. If the model applies it rigidly, tell it to prioritize the learning experience over the formal structure.

Suggested iteration

If the elaboration phase came out too theoretical, ask: "The elaboration needs to be more hands-on. Propose an activity where students have to apply the concept to a phenomenon we didn't cover in class." If the timing doesn't work, ask: "I only have 45 minutes. How do you adjust the sequence without cutting the exploration phase?"