Superadmin · Content · Canonical lessons

Lessons

Govern canonical instructional lessons, assets, language versions, course alignment, publishing readiness, and downstream library visibility.

← Back to Content Command Center + New Lesson Draft Open Tetrahedron Lessons Library Publishing Queue

📘 Canonical instructional layer Read-only · No writes

Lessons are canonical instructional units — multilingual, course-aligned, and downstream-visible in Tetrahedron Library. They can be printable, digital, or hybrid, and may carry teacher guides, student versions, and printable assets. Assignments and standardized exams can attach to a lesson, but a lesson remains its own canonical content type.

This Command Center is read-only: it reads canonical Lessons from Firestore and renders the catalog as Subject → Course → Unit → Lesson. It does not write to Firestore, upload files to Storage, or invoke Cloud Functions.

🌐Multilingual lessons

Architecture

Lessons carry a primary language_code and may have student / teacher / printable variants per language.

🎓Course-aligned

Architecture

Each lesson aligns to canonical subject, course, and optional unit / module references.

🖨️Print · Digital · Hybrid

Architecture

Format support: printable PDF, digital lesson, slides, hybrid. Tracked via format and asset readiness flags.

📚Downstream library

Architecture

Published lessons surface in Tetrahedron Library where teachers can attach them to courses, assignments, or pathways.

🧰Teacher / student versions

Architecture

Lessons can carry teacher guide and student version artifacts independently. Both surface as readiness pills.

🔗Assignment-linked (optional)

Architecture

A lesson may link to one or more canonical assignments. The link is optional — lessons remain their own content type.

Total lessons—canonical lesson docs

Subjects—distinct subjects

Courses—distinct courses

Units / modules—distinct unit groups

Published—status = published

Visible—visible to downstream

Missing primary asset—readiness gap

Missing student version—readiness gap

Missing printable—readiness gap

📋 Canonical lessons catalog Subject → Course → Unit → Lesson · Read-only

Loading…

Loading canonical lessons… Reading from Firestore in read-only mode.

✅ Lesson readiness checklist Validation gates

A canonical lesson can move to the Publishing Queue when these gates clear. This is the contract Tetrahedron Library consumes.

Metadata completetitle, lesson_code, language, country / jurisdiction set

Subject / course / grade taxonomy assignedsubject_ref, course_ref, grade_refs resolve to canonical taxonomy entries

Primary asset attachedLesson PDF, slides, or render manifest present

Student version availablestudent_version_url or student_content present

Teacher guide availableteacher_guide_url or teacher_notes present

Printable version availableprintable_url or pdf_url present for paper delivery

Assignment linkOptional · assignment_ref attached when the lesson has companion practice

Language reviewedEach available_language has a human-reviewed translation pass

Publishing scope definedPublishing scope (school / partner / global) declared

Downstream library visibility verifiedvisible flag and Tetrahedron Library surface confirmed

🔁 Downstream runtime flow

How a canonical lesson moves from SuperAdmin governance to teacher and student surfaces.

1SuperAdminAuthors and validates the lesson — metadata, taxonomy, assets, teacher / student versions.

2Publishing QueueReadiness gates clear; the lesson is published as a canonical, library-safe record.

3Tetrahedron LibraryPublished lessons surface in Tetrahedron Library, scoped by subject, course, and jurisdiction.

4TeacherTeachers attach lessons to courses, learning pathways, or assignments.

5CubeStudents consume the lesson — digital view, printable PDF, or hybrid delivery — depending on format.

6Observatory · OctahedronLesson exposure feeds mastery and intervention surfaces alongside assignment results.

Technical context

auth uid

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collection branch used

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docs loaded

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subjects count

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courses count

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units count

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visible lessons

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fallback branches tried

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errors by branch

none

filters applied

none

Firestore mode

read-only

writes on this page

none

last load

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last error

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Canonical collection (primary)

Lessons

Fallback collections

LessonsKairos · LessonDefinitions · ContentLessons

Authority boundary

SuperAdmin authors · Tetrahedron Library consumes