Generate these sections in order (all inside the main-content div):
Data types, conversion and mutability Theory + PYQ — Lecture 2
CBSE | XII CS | Computational Thinking and Programming – 2 | 35 min
1. Learning Objectives
[3–5 objectives derived from the exam-importance analysis above (never naming PYQs) — use <ul><li>]
2. 35-Minute Lecture Flow
[HTML table: Time | Activity | Teacher Action — split the 35-minute lecture into: 15-18 min tight concept teaching; 4-5 min examiner traps and misconception correction; 10-12 min actual PYQ discussion; 2-3 min recap/exit check — use wording such as Theory teaching, concept check, PYQ discussion, model answer, marking point, common mistake; do NOT make the flow pure theory-only]
3. Concept Notes
[For EVERY sub-concept surfaced by the exam-frequency analysis, never naming or displaying actual board questions:
- .def-box for definition with "In exam language: ..." line
- .key-box with syntax/rules as <ul><li>
- .example-box for worked examples
- <pre><code> for code with .kw/.bi/.st/.cm/.nm token spans
- .recall-box for output with exact expected output
- after each important concept, embed 1–2 self-generated MCQ or Short Answer checks about THIS concept only
- every Section 3 check question must hide its answer inside:
<details><summary>▶ View Answer</summary>answer/explanation</details>
- do not label any question as PYQ, previous year, board-style, PYQ-pattern, or PYQ-style
- do not use .pyq-box or .pyq-meta here (in Combined mode .pyq-box is reserved for Section 7)
]
4. Examiner Tricks & Common Mistakes
[Create one .warn-box for each trap from the EXAMINER FINGERPRINT section.
Each .warn-box must be specific and must include:
- the mistake students commonly make
- the correct rule
- a tiny example or wrong-vs-right explanation
Do not mention actual board questions, years, previous papers, PYQ, or source metadata.]
5. Board Work Plan
[Numbered list: exactly what to write on the blackboard, in order]
6. Classroom Practice Questions
[Self-generated from the examiner-trap patterns analysed above — never call these PYQ-pattern/PYQ-style/board-style. CRITICAL: every answer MUST be inside <details><summary>▶ View Answer</summary>...</details> — never expose the answer directly.
3×1M MCQ + 5×1-2M Short Answer only.
Combined mode theory-section restriction:
- Do NOT include actual PYQs.
- Do NOT include programming/long-answer/HOTS questions in theory lecture practice.
- Frame original MCQ/Short Answer questions from exam-frequency concepts and examiner traps only.
- Every question must map to one concept/trap discovered in Section 4.
MCQ structure:
<div class="mcq-box">
<b>Q1.</b> Question text?<br>
<ul class="options">
<li>a) ...</li>
<li>b) ...</li>
<li>c) ...</li>
<li>d) ...</li>
</ul>
<details><summary>▶ View Answer</summary>
<ul class="options">
<li class="wrong">a) ... — reason why wrong</li>
<li class="correct">b) ... ✓ — reason why correct</li>
...
</ul>
</details>
</div>
Short-answer structure:
<div class="self-test-box"><b>Q4.</b> Question<br><details><summary>▶ View Answer</summary>Full answer</details></div>]
7. PYQ Discussion / Board Questions
[Since this is Combined Theory + PYQ mode, this section MUST include actual PYQs.
Source pool has 6 PYQs. Because 6 <= 15, include ALL 6 actual PYQs.
For each PYQ, use this structure:
<div class="pyq-box">
<div class="pyq-meta">[YEAR] · [X] Marks · [TYPE] · Section-[S]</div>
<b>Q.</b> [full actual question text]<br><br>
<b>Concept tested:</b> [concept name]<br>
<details><summary>▶ View Model Answer</summary>
<b>Model Answer:</b> [answer]<br>
<b>Marking point:</b> [what the examiner expects]<br>
<b>Common mistake:</b> [student mistake]
</details>
</div>
Rules:
* Include all 6 actual PYQs.
* Do not fabricate year, marks, section, or question text.
* Model answer, marking point, and common mistake must be hidden inside <details>.
* Question text and concept tested may remain visible.
* Order Easy to Tough; within difficulty, order 1M → 2M → 3M → 4/5M.
* If all questions are 1M, group them logically by concept pattern (e.g. identifiers, keywords, comments, Python basics).]
8. Student Notes (Copy-ready)
[Concise notes — every concept highlighted by the exam-frequency analysis, written purely as concept notes (no PYQ wording) — in .key-box and .def-box; self-check questions in .self-test-box with <details><summary>▶ View Answer</summary>answer</details>]
9. Homework
[Homework must follow the actual exam pattern for this topic:
- 4×1M MCQ
- 4×1M Short Answer / True-False / one-line answer
- 2×2M Short Answer only if useful for recap or trap correction
- Do NOT force 3M/5M questions unless the actual PYQ pool contains such patterns.
- Do NOT force programming or HOTS homework unless the actual PYQ pool supports it.
- Every homework question must map to one concept/trap from Sections 3, 4, or 7.
- Homework questions should be self-generated, not copied actual PYQs.
Dynamic rule: if actual PYQs are only 1M/2M, homework stays mostly 1M/2M; if they include 3M/5M
programming, homework may include 3M/5M programming; never force unsupported marks or question types.
EVERY answer must be wrapped in <details><summary>▶ View Answer</summary>...</details>.]
10. Exam Tips
[5 specific tips as .tip-box — derived from examiner traps for THIS topic only — written as plain tips, no PYQ wording]
11. Last-Minute Revision Cards
<div class="card-grid">
[One .card per concept: <div class="card-title">[concept]</div> + 1 rule + 1 example]
</div>