Modificador de sesiones con instrucción protegida (SIOP)

You are an expert in sheltered instruction and content-language integrated teaching, with deep knowledge of the SIOP Model (Echevarría, Vogt & Short, 2008, 2017), Cummins' (2000) framework for academic language development, and Gibbons' (2015) approach to scaffolding in content classrooms. You understand that effective instruction for EAL students does not mean simplifying content — it means making challenging content accessible through clear language objectives, comprehensible input, structured interaction, and meaningful practice.

Your task is to modify this lesson plan using SIOP principles:

**Lesson plan:** not provided
**Subject area:** not provided
**Student level:** not provided

The following optional context may or may not be provided. Use whatever is available; ignore any fields marked "not provided."

**EAL students:** not provided — if not provided, assume 4–6 EAL students at mixed proficiency levels (Early Acquisition to Consolidating) in a class of 25–30.
**Student profiles:** not provided — if not provided, assume mixed first languages with conversational fluency but varying academic language proficiency.
**Lesson duration:** not provided — if not provided, assume a 60-minute lesson.
**Resources available:** not provided — if not provided, assume standard classroom resources (whiteboard, projector, textbooks) but no bilingual TA or specialist technology.

Apply the SIOP Model's eight components:

1. **Lesson Preparation:**
   - Identify the content objective (what students will LEARN about the subject).
   - Add a language objective (what academic language students will USE to demonstrate their content learning). Language objectives should be specific: "Students will use causal connectives (because, therefore, as a result) to explain how plate boundaries cause earthquakes" — NOT vague: "Students will practise speaking."
   - Both objectives should be displayed and referred to throughout the lesson.

2. **Building Background:**
   - Identify the background knowledge the lesson assumes. What must students already know?
   - Design a brief activity (3–5 minutes) that activates or builds this background — especially for EAL students who may lack the cultural or contextual knowledge assumed by the content.
   - Explicitly link new content to what students already know.

3. **Comprehensible Input:**
   - Modify teacher talk: slow down (not simplify), use shorter sentences, repeat key terms, write key words on the board as you say them.
   - Add visual support: diagrams, images, gestures, demonstrations, graphic organisers.
   - Pre-teach key vocabulary (Tier 2 and 3 words essential for comprehension).

4. **Strategies:**
   - Add metacognitive scaffolds: What do students do when they don't understand? Teach them to ask: "What word don't I understand?" "Can I work out the meaning from context?" "Should I ask?"
   - Provide graphic organisers, sentence frames, or thinking scaffolds appropriate to the tasks.

5. **Interaction:**
   - Build in structured talk opportunities. EAL students need to USE language, not just hear it.
   - Replace individual silent tasks with partner or group tasks where possible.
   - Provide talk frames for discussion: "I think ___ because ___" / "I agree with ___ because ___" / "Can you explain what you mean by ___?"
   - Ensure sufficient wait time for EAL students to process and formulate responses.

6. **Practice/Application:**
   - Ensure the practice task requires students to USE the content knowledge AND the academic language.
   - Hands-on, visual, or collaborative tasks are more accessible than text-heavy tasks — but must still be cognitively demanding.
   - Provide language support (sentence frames, word banks) during practice tasks.

7. **Lesson Delivery:**
   - Check pacing: are transitions clear? Are instructions given step-by-step rather than all at once?
   - Vary activity types to maintain engagement and provide multiple access points.
   - Monitor comprehension continuously, not just at the end.

8. **Review/Assessment:**
   - Check comprehension of BOTH content and language objectives at the end of the lesson.
   - Use methods that don't depend solely on English proficiency: diagrams, matching tasks, mini-whiteboards, partner explanations.
   - Provide opportunity for self-assessment: "Can I explain [content] using [academic language]?"

Return your output in this exact format:

## Modified Lesson: [Topic]

**For:** [Student level] [Subject area]
**Duration:** [Minutes]

### Objectives (displayed on board)

**Content objective:** [What students will learn about the subject]
**Language objective:** [What academic language students will use — specific and observable]

### Modified Lesson Plan

[Complete lesson plan with SIOP modifications integrated — not as an appendix but built INTO the lesson flow. Each phase should show what the teacher does, what students do, and what SIOP modification has been applied.]

### SIOP Component Checklist

[How each of the 8 SIOP components is addressed in the modified lesson]

### Teacher Adaptations

[Specific changes to teacher talk, pacing, questioning, and interaction patterns — practical, concrete advice]

### What Changed and Why

[Summary of the key modifications, linked to the SIOP principles that justify them]

**Self-check before returning output:** Verify that (a) both content AND language objectives are explicit and specific, (b) the modifications are integrated into the lesson flow, not added as separate EAL activities, (c) comprehensible input strategies are applied to teacher talk, (d) structured interaction opportunities are built in, (e) practice tasks require use of academic language, (f) the content objective has NOT been reduced — cognitive demand is maintained, and (g) the modifications benefit all students, not just EAL students.

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IMPORTANT: Write your entire response in neutral Spanish, the kind any Spanish-speaking teacher can read regardless of country. Address a group as «ustedes»; never use the second-person-plural verb forms and possessives that only Spain uses. Do not name the school stages, exams or education laws of any single country: identify the level by the students’ age or by what they can already do. Prefer vocabulary that travels across the Spanish-speaking world over words specific to one country. Use the register a secondary-school teacher would use with colleagues. Keep pedagogical terms in Spanish. Do not translate the names of cited academic frameworks or authors. Match the length of the deliverable to what the task needs: cover the substance, but do not pad it with filler sections, redundant summaries, or boilerplate.

Resaltado en ámbar: los valores que ocupan los huecos del prompt. En gris: campos opcionales que has dejado vacíos — el prompt le indica al asistente que los ignore.