SG×EducationOS — Secondary 1–2 Foundation Bridge Pack v1.0 (Pre-O-Level Core Engine)

TITLE: SG×EducationOS — Secondary 1–2 Foundation Bridge Pack v1.0 (Pre-O-Level Core Engine)
SUBTITLE: Same engine, lighter atoms: keep students in P2 band before Upper Sec
VERSION: CivOS Unified Spec v1.x
MODE: Almost-Code / Bridge pack / WordPress paste-ready
OWNER: eduKateSG Fence Learning Systems
PLACE: SG
UPDATED: 2026-02-16
STATUS: publishable
PURPOSE:
Lower Sec is where drift begins:
- students “seem fine” (P1) until Upper Sec load spikes and everything collapses (P0).
This bridge pack prevents that by:
- running the same Sensors → Router → Protocols loop,
- but with simpler task forms and atoms that match Sec 1–2 load.
CORE IDEA:
Same OS. Different intensity.
We keep Phase reliability (P2) stable under rising load.
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H1: Secondary 1–2 Foundation Bridge Pack (SG) — English + Math
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SECTION 1 — P0–P3 TARGETS FOR SEC 1–2
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Target band:
- End Sec 1: stable P2 on 10-min sensors (no trace/working leaks)
- Mid Sec 2: P2 under variation + simple timed test conditions
- End Sec 2: ready to “snap into” O-Level engine without shock
Common Sec 1–2 collapse signatures:
- “I understand” but can’t explain (TraceMissing)
- Algebra manipulation errors explode (working weak)
- Word problems: operation drift
- Writing: rambling + no paragraph role
- Time crash: stuck too long, no pacing
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SECTION 2 — WEEKLY SENSORS (SEC 1–2) — A/B/C ROTATION
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Week A (Inference + Algebra core):
ENGLISH:
- ENG-A1: TRACE-10 (text evidence)
- ENG-A2: OE-10 (literal + inference)
- ENG-A3: Editing-10 (basic)
MATH:
- MATH-A1: Algebra Basics-10
- MATH-A2: Ratio/Percent Basics-10
- MATH-A3: Word Problem Model-10 (simple 2-step)
Week B (Writing spine + Geometry core):
ENGLISH:
- ENG-B1: Paragraph Chain-10 (topic sentence + support)
- ENG-B2: Situational mini-10 (points + tone)
- ENG-B3: Vocab in context-10
MATH:
- MATH-B1: Geometry/Angle-10
- MATH-B2: Mensuration Basics-10
- MATH-B3: Mixed Basics-10
Week C (Oral + Data + Transfer):
ENGLISH:
- ENG-C1: Visual Text-10 (evidence)
- ENG-C2: Oral 3-Part-10
- ENG-C3: Listening-10
MATH:
- MATH-C1: Data/Graph-10
- MATH-C2: Error-Find-Fix-10
- MATH-C3: Mixed Transfer-10
Repeat A → B → C.
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SECTION 3 — SEC 1–2 MICRO-CHECK CARDS (10 minutes each)
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ENGLISH:
- SENS-ENG-S12-TRACE-10-v1.0
  format: 1 paragraph + 3 Qs + evidence line each
  pass: >=8/9 (answers + evidence)
- SENS-ENG-S12-OE-10-v1.0
  format: 1 short text + 4 OE (2 inference)
  pass: >=5/6 and evidence valid
- SENS-ENG-S12-EDIT-10-v1.0
  format: 8 sentences, 10 errors total
  pass: >=8/10
- SENS-ENG-S12-PARA-10-v1.0
  format: 1 prompt → write 1 paragraph
  must include:
    - topic sentence (1)
    - 2 supports (2)
    - closing/impact (1)
  pass: >=3/4 + no coherence break
- SENS-ENG-S12-SIT-10-v1.0
  format: mini situational (3 points)
  pass: >=5/6
- SENS-ENG-S12-VOCAB-10-v1.0
  format: 8 cloze items (POS+meaning)
  pass: >=7/8
- SENS-ENG-S12-VT-10-v1.0
  format: 1 visual + 6 Qs + 3 evidence lines
  pass: >=8/9 and evidence valid
- SENS-ENG-S12-ORAL-10-v1.0
  format: 2 Qs, each must be Answer→Reason→Example
  pass: >=7/8
- SENS-ENG-S12-LISTEN-10-v1.0
  format: 8 MCQ (main+detail+infer)
  pass: >=7/8
MATH:
- SENS-MATH-S12-ALG-10-v1.0
  format: 8 items (simplify, substitute, solve simple equations)
  pass: >=7/8
- SENS-MATH-S12-RP-10-v1.0
  format: 8 items (ratio/proportion/percent basics)
  pass: >=7/8
- SENS-MATH-S12-WP-10-v1.0
  format: 2 word problems (2-step) with model/working
  pass: both correct + working
- SENS-MATH-S12-GEO-10-v1.0
  format: 8 items (angles, basic properties)
  pass: >=7/8
- SENS-MATH-S12-MENS-10-v1.0
  format: 8 items (perimeter/area/volume basics)
  pass: >=7/8
- SENS-MATH-S12-MIX-10-v1.0
  format: 10 mixed basics
  pass: >=8/10
- SENS-MATH-S12-DATA-10-v1.0
  format: 8 items (tables/graphs)
  pass: >=7/8
- SENS-MATH-S12-ERRFIX-10-v1.0
  format: 3 worked solutions with 1 error each
  pass: >=2/3
- SENS-MATH-S12-TRANSFER-10-v1.0
  format: 6 harder mixed items (variation)
  pass: >=5/6
Shared red flags:
- TraceMissing / WorkingMissing
- TimeCrash twice in 2 weeks
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SECTION 4 — AUTO ROUTER (SEC 1–2) — SIMPLE & FAST
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Hard Rule:
If TraceMissing or WorkingMissing:
- FenceMode = TRUNCATE+STITCH
- RootNode #1 = TRACE/WORKING protocol
- No widening until 2 consecutive passes.
ENGLISH routes:
- TRACE fail → FENCE-TRACE-LADDER-S12-20
- OE inference fail → FENCE-INFERENCE-CHAIN-S12-20 + TRACE
- Paragraph fail (ramble) → FENCE-PARA-ROLE-S12-20
- Situational fail (miss points) → FENCE-SIT-CHECKLIST-S12-20
- Editing fail → FENCE-EDITING-CORE-S12-20
- Visual text fail → FENCE-VT-SCAN+INFER-S12-20
- Oral one-line answers → FENCE-ORAL-3PART-S12-20
MATH routes:
- Algebra fail → FENCE-ALG-LADDER-S12-20
- Ratio/percent fail → FENCE-RP-SENSE-S12-20
- Word problem fail → FENCE-MODEL-DRAW-S12-20 + STEP-LOCK
- Geometry fail → FENCE-GEO-DIAGRAM-S12-20
- Mensuration fail → FENCE-MENS-FORMULA-S12-20
- ErrFix fail → FENCE-ERROR-DETECT-S12-20
- Mix/Transfer fail but topics pass → FENCE-PACING+CHECKLINE-S12-20
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SECTION 5 — THE 10 CORE PROTOCOLS (SEC 1–2)
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(Each = 20 minutes. Run 2–3 per week max.)
ENGLISH:
1) FENCE-TRACE-LADDER-S12-20
- Answer → Quote → Explain (mandatory)
2) FENCE-INFERENCE-CHAIN-S12-20
- 2 clues → inference → implication
3) FENCE-PARA-ROLE-S12-20
- topic sentence
- 2 supports (detail+explain)
- closing impact
4) FENCE-SIT-CHECKLIST-S12-20
- convert task requirements into boxes and tick
5) FENCE-EDITING-CORE-S12-20
- detect → category → correct → recheck
6) FENCE-ORAL-3PART-S12-20
- Answer → Reason → Example
MATH:
7) FENCE-ALG-LADDER-S12-20
- one transformation at a time + verify by substitution
8) FENCE-RP-SENSE-S12-20
- ratio “for every” + percent as “out of 100” + check table
9) FENCE-MODEL-DRAW-S12-20
- model/diagram → equation → solve → unit check
10) FENCE-CHECKLINE+PACING-S12-20
- 2-pass approach + estimation + inverse check
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SECTION 6 — EXIT CONDITIONS (WHEN YOU’RE ALLOWED TO WIDEN)
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Widen allowed when ALL:
ENGLISH:
- TRACE-10 pass twice consecutively
- OE-10 pass twice consecutively
- Paragraph-10 pass twice consecutively
MATH:
- WP-10 pass twice consecutively (with working)
- MIX-10 pass twice consecutively
- ERRFIX-10 pass at least once
If any Trace/Working missing:
- widening blocked for entire system.
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SECTION 7 — “BRIDGE TO UPPER SEC” SWITCHOVER RULE
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When the student reaches:
- stable passes on the above exit conditions for 3 weeks,
Switch:
- replace S12 sensors with O-Level sensors (same rotation).
No shock, because the loop is the same.
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SECTION 8 — PRINTABLE CHECKLIST (SEC 1–2)
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[SEC 1–2 CORE ENGINE CHECKLIST v1.0]
Week#: __ Rotation: A / B / C
ENGLISH (3 sensors):
□ ______ PASS/FAIL
□ ______ PASS/FAIL
□ ______ PASS/FAIL
TraceMissing? □ YES □ NO
MATH (3 sensors):
□ ______ PASS/FAIL
□ ______ PASS/FAIL
□ ______ PASS/FAIL
WorkingMissing? □ YES □ NO
TimeCrash? □ YES □ NO
Top3 RootNodes (across both):
#1 ____________________
#2 ____________________
#3 ____________________
Protocols (max 4):
□ English: ____________________
□ English: ____________________
□ Math: ____________________
□ Math: ____________________
Widen allowed?
□ NO
□ YES
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END: Secondary 1–2 Foundation Bridge Pack v1.0
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