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Sec 3 → Sec 4 Transition Pipeline (E-Math / A-Math Corridor) (BTT.EDU.Z2.P.TRN.001) — Z2 Transition Page (V1.1, Publish-Ready)

Title: Sec 3 → Sec 4 Transition Pipeline — The Corridor Where Students Either Stabilise or Enter Rescue Mode
Coordinate: BTT.EDU.Z2.P.TRN.001

Start Here: 

Definition Lock

Sec 3 → Sec 4 Transition Pipeline is the Z2 corridor where a student’s math system is forced to either:

  • become regenerative (stable execution under load), or
  • become rescue-based (volatile performance dependent on support).

This transition is not a “promotion.”
It is a load escalation corridor.

If the student enters Sec 4 with:

  • high TTC variance,
  • prompt dependency,
  • false competence,
  • and dominant error classes,
    then Sec 4 becomes emergency repair under the O-Level bind.

What This Page Is

This is a Z2 transition pipeline page.

It tells you:

  • what actually changes from Sec 3 to Sec 4,
  • what must be stabilised first (priority routing),
  • what a correct ramp schedule looks like,
  • and the minimum conditions before the O-Level bind clamps.

What Changes at Sec 4 (The 4 corridor escalations)

Escalation 1 — Full-paper integration becomes normal

Sec 3 still allows topic-by-topic survival.
Sec 4 forces mixed chains.

Escalation 2 — Time compression becomes strict

TTC must fit the paper tempo.

Sensor:

  • BTT.SEN.Z0.S.TTC.001

Escalation 3 — Independence becomes mandatory

Prompts disappear. Confirmation disappears.

Sensor:

  • BTT.SEN.Z1.S.DEP.001

Escalation 4 — Consequence amplification

Mistakes cost more. Rework costs more. Panic costs more.

Sensors:

  • BTT.MAT.Z0.S.ERR.001
  • BTT.SEN.Z1.S.FCG.001

The Transition Failure Loop (How students enter rescue mode)

Typical corridor:

  1. Sec 3 ends with “manageable but slow”
  2. Sec 4 starts with full-paper demands
  3. TTC spikes (BTT.SEN.Z0.S.TTC.001)
  4. student rushes → slip errors explode (BTT.MAT.Z0.S.ERR.001)
  5. prompts increase (“what do I do?”) (BTT.SEN.Z1.S.DEP.001)
  6. comfort-practice continues (false competence persists) (BTT.SEN.Z1.S.FCG.001)
  7. O-Level bind amplifies it (BTT.EXM.Z2.B.OLEV.001)
    → rescue mode

This can be prevented if the transition pipeline is handled correctly.

Transition Priority Routing (What to fix first)

Most people fix the wrong thing first (they chase “topics”).
The correct priority order:

Priority 1 — Stop illegal algebra (catastrophic failures)

If transformation errors dominate, rebuild:

  • BTT.MAT.Z0.P.ALG.001

Because illegal algebra poisons entire questions.

Priority 2 — Stabilise TTC variance (fit exam tempo)

Measure and reduce TTC spikes:

  • BTT.SEN.Z0.S.TTC.001

Priority 3 — Remove prompt dependency (restore independence)

Enforce silent starts:

  • BTT.SEN.Z1.S.DEP.001

Priority 4 — Eliminate false competence (change training conditions)

Comfort-mode vs load-mode must converge:

  • BTT.SEN.Z1.S.FCG.001

Priority 5 — Repair dominant error class

Classify and repair:

  • BTT.MAT.Z0.S.ERR.001

If you do these in the wrong order, progress feels like progress but fails under bind.

Minimum Stability Conditions Before Sec 4 Ramps Up

You don’t need perfection. You need stability.

Minimum conditions:

  • Algebra control is functional: BTT.MAT.Z0.P.ALG.001
  • TTC variance is not exploding: BTT.SEN.Z0.S.TTC.001
  • student can start problems without prompts: BTT.SEN.Z1.S.DEP.001
  • one dominant error class identified and shrinking: BTT.MAT.Z0.S.ERR.001
  • false competence gap reducing: BTT.SEN.Z1.S.FCG.001

If these are not true, do not jump to full papers yet.

Ramp Schedule (Correct Paper-Ramp Protocol)

This is the core of the transition pipeline.

Stage A — Micro-sets (5–10 minutes)

Goal: reduce TTC variance and lock legality/checking.

  • timed, short, strict
  • focused on dominant error class
  • no prompts

Stage B — Half-papers (20–30 minutes)

Goal: sustain execution across mixed segments.

  • mixed but controlled
  • build stamina and recovery loops

Stage C — Full papers (exam conditions)

Goal: make performance predictable.

  • strict timing
  • strict no-prompt
  • full checking protocol

Rule:
You move stages only when TTC variance falls and errors stop cascading.

How This Transition Splits Into Two Tracks (E-Math vs A-Math)

E-Math track binds to:

  • BTT.MAT.Z2.N.SEC3.001 → BTT.MAT.Z2.N.SEC4.001

A-Math track binds to:

  • BTT.MAT.Z2.N.AM3.001 → BTT.MAT.Z2.N.AM4.001

Both tracks share the same sensors:

  • TTC, dependency, false competence, error class

But A-Math additionally depends heavily on:

  • BTT.MAT.Z0.P.DIF.001

Where This Transition Pipeline Binds (Exam system)

This pipeline exists because it feeds directly into:

  • Secondary Exam Pipeline
    BTT.EXM.Z2.P.SEC.001
  • O-Level Bind
    BTT.EXM.Z2.B.OLEV.001

Meaning:
If transition is mishandled, the bind clamps on an unstable system.

Lattice Coordinates Referenced (Required)

  • BTT.EDU.Z2.P.TRN.001
  • BTT.MAT.Z2.N.SEC3.001
  • BTT.MAT.Z2.N.SEC4.001
  • BTT.MAT.Z2.N.AM3.001
  • BTT.MAT.Z2.N.AM4.001
  • BTT.MAT.Z0.P.ALG.001
  • BTT.MAT.Z0.P.DIF.001
  • BTT.SEN.Z0.S.TTC.001
  • BTT.SEN.Z1.S.DEP.001
  • BTT.SEN.Z1.S.FCG.001
  • BTT.MAT.Z0.S.ERR.001
  • BTT.EXM.Z2.P.SEC.001
  • BTT.EXM.Z2.B.OLEV.001

Edges Created (BindsTo / Impacts / Observes)

  • BTT.EDU.Z2.P.TRN.001 BindsTo BTT.MAT.Z2.N.SEC3.001
  • BTT.EDU.Z2.P.TRN.001 BindsTo BTT.MAT.Z2.N.SEC4.001
  • BTT.EDU.Z2.P.TRN.001 BindsTo BTT.MAT.Z2.N.AM3.001
  • BTT.EDU.Z2.P.TRN.001 BindsTo BTT.MAT.Z2.N.AM4.001
  • BTT.SEN.Z0.S.TTC.001 Observes stability across BTT.EDU.Z2.P.TRN.001
  • BTT.EDU.Z2.P.TRN.001 Impacts BTT.EXM.Z2.B.OLEV.001

Sensors Mentioned

  • BTT.SEN.Z0.S.TTC.001
  • BTT.SEN.Z1.S.DEP.001
  • BTT.SEN.Z1.S.FCG.001
  • BTT.MAT.Z0.S.ERR.001

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