Generate these sections in order (all inside the main-content div):
Text file reading writing searching and counting PYQ part 3 — Lecture 30
CBSE | XII CS | Computational Thinking and Programming – 2 | 35 min
1. Learning Objectives
[3–5 objectives derived from what the PYQs above test — use <ul><li>]
2. 35-Minute Lecture Flow
[HTML table: Time | Activity | Teacher Action — include a PYQ discussion and full-coverage slot]
3. Quick Concept Recap
[Keep this section short. Do NOT reteach the full topic from scratch.
Include only the rules needed to solve the PYQs — i.e. the traps listed in the
EXAMINER FINGERPRINT section above (for this lecture: Text file reading writing searching and counting).
Use .def-box and .key-box only. Add at most one tiny example if needed.
Do not include long theory, long programming tasks, or unrelated examples.]
4. Examiner Tricks & Common Mistakes
[One .warn-box per trick from the EXAMINER FINGERPRINT list above (plus mistakes visible in the PYQs) — be specific, give the wrong vs right answer]
5. Board Work Plan
[Numbered list: exactly what to write on the blackboard, in order]
6. Classroom Practice Questions
[Modelled on PYQ style. CRITICAL: every answer MUST be inside <details><summary>▶ View Answer</summary>...</details> — never expose the answer directly.
Practice questions must follow the difficulty and mark pattern of the actual PYQ pool.
For this topic:
* 3×1M MCQ
* 5×1M/2M Short Answer
* Include 2×3–5M programming practice (the PYQ pool contains long-answer/programming patterns)
* No HOTS question (the provided PYQs do not reveal a higher-order trap)
Every question must be based on one of the traps from Section 4 (EXAMINER FINGERPRINT).
Every answer must be hidden inside <details><summary>▶ View Answer</summary>...</details>.
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>
(Note: options list shown WITHOUT .correct/.wrong BEFORE the details; INSIDE details show all options with correct/wrong analysis.)
Short-answer structure:
<div class="self-test-box"><b>Q4.</b> Question<br><details><summary>▶ View Answer</summary>Full answer</details></div>
Dynamic distribution rule:
* If actual PYQs are only 1M/2M, keep generated practice mostly 1M/2M.
* If actual PYQs include 3M/5M programming, include 3M/5M programming practice.
* Never force HOTS or programming questions when the provided PYQ pool does not support them.]
7. PYQ Discussion / Full Coverage (9 source questions)
[This source pool has 9 actual PYQs.
PYQ COVERAGE RULE:
- This pool has 9 PYQs, so include and discuss ALL 9 actual PYQs in Section 7.
- Do not compress, replace, paraphrase, or skip any actual PYQ in this small pool.
- Compression is allowed only when the source pool has more than 15 questions.
- Never fabricate board years, marks, sections, or question text.
For every fully discussed actual PYQ include:
year · marks · type · full question text · concept tested · model answer inside <details> · common mistake inside <details>
Order questions Easy to Tough; within difficulty, order 1 mark → 2 marks → 3 marks → 4/5 marks.
Use this structure for actual PYQ examples:
Use this structure for each question:
<div class="pyq-box">
<div class="pyq-meta">[YEAR] · [X] Marks · [TYPE] · Section-[S]</div>
<b>Q.</b> [full question text — include code if any]<br><br>
<b>Concept tested:</b> [concept name]<br>
<details><summary>▶ View Model Answer</summary>
<b>Model Answer:</b> [full answer with code/table as needed, using .kw/.bi/.st token spans in <pre><code>]<br>
<b>Common mistake:</b> [what students get wrong — be specific]
</details>
</div>
]
8. Student Notes (Copy-ready)
[Concise notes — every concept from PYQs — 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 PYQ pattern for this topic:
- 3×1M MCQ
- 3×1M Short Answer
- 2×2M Short Answer only if useful for recap or trap correction
- Include 2×3–5M programming homework (the PYQ pool contains long-answer/programming patterns)
- Every homework question must map to one trap or pattern from Section 4 / Section 7.
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> inside .self-test-box or .mcq-box.]
10. Exam Tips
[5 specific tips as .tip-box — derived from PYQ patterns for THIS topic only]
11. Last-Minute Revision Cards
<div class="card-grid">
[One .card per concept: <div class="card-title">[concept]</div> + 1 rule + 1 example]
</div>