Generate these sections in order (all inside the main-content div):
Operators, expressions and precedence PYQ part 1 — Lecture 50
CBSE | XI CS | Unit 2: Computational Thinking and Programming – I (Python) | 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 short recap followed by full PYQ discussion and timed solving]
3. Concept Notes
[Give only a brief solving recap for each concept needed by the actual PYQs:
- .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 (Python topics)
- .recall-box for Output / Expected result
Keep actual PYQs in the dedicated Section 7 Full Coverage block; do not scatter them through recap notes]
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
[DYNAMIC CLASS PRACTICE RULE:
Choose question forms that naturally match this topic. Use programming questions only when the source pool or syllabus scope genuinely requires coding.
- Every question must stay inside "Operators, expressions and precedence PYQ part 1".
- Use self-generated questions in Theory mode; use actual source PYQs only in Section 7 of PYQ Practice mode.
- Every answer must be hidden inside <details><summary>▶ View Answer</summary>...</details>.
- Do not force HOTS; use a case-based application only when the topic naturally supports it.]
7. PYQ Discussion / Full + Compressed Coverage
[PYQ COVERAGE RULE:
- Source pool has 19 actual PYQs.
- Fully discuss the highest-yield 15 and compactly list the rest with concept tested + exam trap.
- Never fabricate year, marks, section, or question text.
For every fully discussed actual PYQ use:
<div class="pyq-box">
<div class="pyq-meta">[REAL YEAR] · [REAL MARKS] · [TYPE]</div>
<b>Q.</b> [full question text]<br><br>
<b>Concept tested:</b> [concept name]<br>
<details><summary>▶ View Model Answer</summary>
<b>Model Answer:</b> [full answer with code in <pre><code> if needed]<br>
<b>Marking point:</b> [what earns the mark]<br>
<b>Common mistake:</b> [specific error students make]
</details>
</div>]
8. Student Notes (Copy-ready)
[Concise notes — a concise recap of every concept needed by the actual PYQs — in .key-box and .def-box]
9. Homework
[DYNAMIC HOMEWORK RULE:
- Mirror the actual PYQ pool for this lecture. Available source marks: 1M.
- Use only source-supported question types and marks.
- Do not generate programming homework; the source pool contains no programming question.
- Do not force 5M, HOTS, or any mark type absent from the current source pool.
- Keep questions within "Operators, expressions and precedence PYQ part 1".
- Hide every answer inside <details><summary>▶ View Answer</summary>...</details>.]
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>