1. Language identity, language family and local geography

ANLHE Micronesia and New Ireland taxonomy audit (November 2026): Tigak is an Oceanic Austronesian language of northern New Ireland that appears with Kara, Nalik, Tungag and other languages in comparative documentation of the region. Tigak is not simply an alternate name for Nalik or Kara. Shared community geography and language-family position are insufficient to reproduce undocumented Tigak sentences from neighboring grammars. Source for comparative classification.

Tigak is documented in northwestern New Ireland and neighboring coastal island communities, Papua New Guinea and classified as Austronesian, Oceanic, Western Oceanic, Lavongai–Nalik. Its bibliographic ISO 639-3 identifier is tgc. Geographic contact and shared linguistic ancestry should not be confused with identity of language or dialect.

2. Historical sources and chronology

Clive H. Beaumont’s The Tigak Language of New Ireland, first published in 1979, supplies a structured grammatical description. An Australian National University repository record associated with earlier dissertation research has different dates; distinguish academic-submission, first publication and digital deposit rather than treating them as a single event.

Research dates and publishing dates are not dates of a language’s origin. Source speakers and editors have different intellectual contributions, and documented population numbers cannot be assumed valid for 2026.

3. Writing systems, alphabet and phonology

Beaumont’s analysis describes twelve consonant phonemes and five vowel phonemes, with complex vowel nuclei but no consonant clusters within a syllable. These are source-identified analytical counts, not claims of universally invariant dialect pronunciation.

A transcribed spelling is not evidence for an independently documented ancient script. Preserve original vowel and consonant symbols, source punctuation and phonetic notation exactly when quoting source forms. Alphabet exercises must begin with the reference’s documented graphic inventory.

4. Grammar, grammatical meaning and sentence interpretation

The 1979 account treats phonology, noun and verb phrases, transitivity, possessive suffixes, questions and the structure of dependent and independent clauses. A tagmemic analysis uses a theoretical terminology that should be understood historically before conversion to more recent frameworks.

The encyclopedia distinguishes attested grammar from general Oceanic-language expectations. Students should work with complete authenticated clauses before offering translations, phrasebooks or morphological paradigms.

5. Documented lexicon and evidence-verified example method

A lexical example must identify the exact headword, recorded meaning, original spelling and local variety, with the page or archival entry. Unchecked plausible words are excluded. For a lesson on body parts, kinship, fishing, counting or spatial relations, extract and check the relevant form from Beaumont 1979, The Tigak Language of New Ireland, Australian National University Pacific Linguistics, preserving the original orthography.

Every future original-language example should contain: attested native form; accurate contextual translation; source and date; dialect or variety; a clear phonological or grammatical teaching point; and a note where evidence is incomplete. This is a methodological requirement, not a fabricated bilingual dialogue.

6. Community, social history and ecology

The language’s proximity to Nalik, Kara, Lavongai and the regional use of Tok Pisin makes comparative and contact-linguistic work relevant. Linguistic similarity should not erase Tigak’s independently described identity.

Community scholarship and living speech must not be reduced to a single historical observer’s perspective. Cultural examples should attribute speakers and respect any restrictions on reuse of audio, ritual vocabulary or archival narrative.

7. Research bibliography and documentary witnesses

• Beaumont 1979, The Tigak Language of New Ireland, Australian National University Pacific Linguistics. https://books.google.com/books/about/The_Tigak_Language_of_New_Ireland.html?id=72cOAAAAYAAJ
• Grambank Tigak research source bibliography. https://grambank.clld.org/languages/tiga1245

References are supplied to make documentary claims auditable. Complete text excerpts must be checked in their source; listing a grammar does not license the creation of fake quotations.

8. Structure of ninety research lessons

Nine modules organize ninety separately numbered documentary exercises. The topics are teaching and research objectives; completion of the syllabus outline does not mean the ninety individual lessons already contain fully checked textbook treatments.

Module 1: Identity, chronology and primary documentary evidence — Lessons 1–10

Primary research focus: Beaumont’s 1979 description. Related evidence topic: phoneme inventory. Use source-specific citations and preserve dialect and historical labels.

1. Lesson 1: Language names and endonyms — Beaumont’s 1979 description. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
2. Lesson 2: Geographic distribution — phoneme inventory. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
3. Lesson 3: Genealogical placement — five-vowel system. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
4. Lesson 4: Related versus distinct languages — syllable structure. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
5. Lesson 5: Earliest relevant publication — tagmemic research method. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
6. Lesson 6: Researchers and speakers — independent pronouns. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
7. Lesson 7: Documentary chronology — possessive suffixes. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
8. Lesson 8: Dialect and register labels — transitive verb phrases. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
9. Lesson 9: Source bias — question markers. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
10. Lesson 10: Verified bibliographic record — regional comparison. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.

Module 2: Writing, phonetics and phonology — Lessons 11–20

Primary research focus: phoneme inventory. Related evidence topic: five-vowel system. Use source-specific citations and preserve dialect and historical labels.

11. Lesson 11: Source orthography — phoneme inventory. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
12. Lesson 12: Consonant inventory — five-vowel system. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
13. Lesson 13: Vowel inventory — syllable structure. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
14. Lesson 14: Syllable structure — tagmemic research method. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
15. Lesson 15: Length and stress — independent pronouns. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
16. Lesson 16: Allophony and phonemes — possessive suffixes. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
17. Lesson 17: Transcription variability — transitive verb phrases. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
18. Lesson 18: Spelling and regional differences — question markers. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
19. Lesson 19: Sound recording annotation — regional comparison. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
20. Lesson 20: Evidence-based pronunciation guide — Beaumont’s 1979 description. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.

Module 3: Lexical documentation and semantics — Lessons 21–30

Primary research focus: five-vowel system. Related evidence topic: syllable structure. Use source-specific citations and preserve dialect and historical labels.

21. Lesson 21: Primary lexical references — five-vowel system. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
22. Lesson 22: Body and kinship vocabulary — syllable structure. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
23. Lesson 23: Seafaring and coastal life — tagmemic research method. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
24. Lesson 24: Ecology terminology — independent pronouns. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
25. Lesson 25: Domestic vocabulary — possessive suffixes. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
26. Lesson 26: Numerals — transitive verb phrases. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
27. Lesson 27: Movement and direction — question markers. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
28. Lesson 28: Contact loanwords — regional comparison. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
29. Lesson 29: Polysemy and translation — Beaumont’s 1979 description. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
30. Lesson 30: Ten-entry citation portfolio — phoneme inventory. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.

Module 4: Nominal grammar and reference — Lessons 31–40

Primary research focus: syllable structure. Related evidence topic: tagmemic research method. Use source-specific citations and preserve dialect and historical labels.

31. Lesson 31: Nominal classes — syllable structure. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
32. Lesson 32: Noun phrases — tagmemic research method. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
33. Lesson 33: Articles and determiners — independent pronouns. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
34. Lesson 34: Personal pronouns — possessive suffixes. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
35. Lesson 35: Number distinctions — transitive verb phrases. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
36. Lesson 36: Possession and alienability — question markers. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
37. Lesson 37: Demonstratives — regional comparison. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
38. Lesson 38: Relational markers — Beaumont’s 1979 description. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
39. Lesson 39: Nominal modification — phoneme inventory. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
40. Lesson 40: Documented noun phrase analysis — five-vowel system. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.

Module 5: Verbal patterns and clause structures — Lessons 41–50

Primary research focus: tagmemic research method. Related evidence topic: independent pronouns. Use source-specific citations and preserve dialect and historical labels.

41. Lesson 41: Verb identification — tagmemic research method. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
42. Lesson 42: Transitivity — independent pronouns. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
43. Lesson 43: Preverbal or postverbal markers — possessive suffixes. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
44. Lesson 44: Temporal meaning — transitive verb phrases. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
45. Lesson 45: Aspectual interpretation — question markers. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
46. Lesson 46: Negation — regional comparison. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
47. Lesson 47: Questions — Beaumont’s 1979 description. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
48. Lesson 48: Commands — phoneme inventory. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
49. Lesson 49: Complex clauses — five-vowel system. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
50. Lesson 50: Full clause analysis — syllable structure. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.

Module 6: Historical texts and discourse — Lessons 51–60

Primary research focus: independent pronouns. Related evidence topic: possessive suffixes. Use source-specific citations and preserve dialect and historical labels.

51. Lesson 51: Find an authentic passage — independent pronouns. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
52. Lesson 52: Speaker or editor — possessive suffixes. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
53. Lesson 53: Record genre and date — transitive verb phrases. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
54. Lesson 54: Segment text — question markers. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
55. Lesson 55: Gloss original words — regional comparison. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
56. Lesson 56: Translate in context — Beaumont’s 1979 description. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
57. Lesson 57: Discourse organization — phoneme inventory. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
58. Lesson 58: Cultural interpretation — five-vowel system. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
59. Lesson 59: Textual variation — syllable structure. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
60. Lesson 60: Critical annotated passage — tagmemic research method. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.

Module 7: Comparative and historical research — Lessons 61–70

Primary research focus: possessive suffixes. Related evidence topic: transitive verb phrases. Use source-specific citations and preserve dialect and historical labels.

61. Lesson 61: Identify relevant comparanda — possessive suffixes. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
62. Lesson 62: Cognate test — transitive verb phrases. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
63. Lesson 63: Borrowing evidence — question markers. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
64. Lesson 64: Sound correspondences — regional comparison. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
65. Lesson 65: Grammatical comparison — Beaumont’s 1979 description. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
66. Lesson 66: Dialect variation — phoneme inventory. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
67. Lesson 67: Language contact — five-vowel system. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
68. Lesson 68: Historical chronology — syllable structure. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
69. Lesson 69: Limitations of reconstruction — tagmemic research method. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
70. Lesson 70: Comparative commentary — independent pronouns. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.

Module 8: Culture, community and research ethics — Lessons 71–80

Primary research focus: transitive verb phrases. Related evidence topic: question markers. Use source-specific citations and preserve dialect and historical labels.

71. Lesson 71: Community knowledge — transitive verb phrases. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
72. Lesson 72: Island environments — question markers. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
73. Lesson 73: Kinship contexts — regional comparison. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
74. Lesson 74: Migration and mobility — Beaumont’s 1979 description. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
75. Lesson 75: Multilingual practice — phoneme inventory. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
76. Lesson 76: Language teaching use — five-vowel system. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
77. Lesson 77: Archival permissions — syllable structure. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
78. Lesson 78: Speaker intellectual credit — tagmemic research method. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
79. Lesson 79: Community feedback — independent pronouns. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
80. Lesson 80: Documentation sustainability — possessive suffixes. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.

Module 9: Learning outcomes and research portfolio — Lessons 81–90

Primary research focus: question markers. Related evidence topic: regional comparison. Use source-specific citations and preserve dialect and historical labels.

81. Lesson 81: Bibliography — question markers. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
82. Lesson 82: Orthography evidence sheet — regional comparison. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
83. Lesson 83: Phonological note — Beaumont’s 1979 description. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
84. Lesson 84: Verified lexicon — phoneme inventory. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
85. Lesson 85: Pronominal source audit — five-vowel system. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
86. Lesson 86: Verbal grammar audit — syllable structure. Verify the source’s terminology, give a responsible English explanation and avoid manufacturing a plausible native sentence not attested in the source. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
87. Lesson 87: Annotated original text — tagmemic research method. Locate a language-specific source form or passage; record precise original spelling, edition, date and an entry or page identifier before analysis. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
88. Lesson 88: Contact-linguistics analysis — independent pronouns. Produce an annotated research note including a documentary witness, grammatical function, possible dialect variation and limits of the evidence. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
89. Lesson 89: Ethical documentation protocol — possessive suffixes. Assess what the existing reference establishes and design a concrete community or archive verification step for unresolved details. Assessment: source record, short linguistic commentary and explicit evidence-limit note.
90. Lesson 90: Final research portfolio — transitive verb phrases. Compare the feature against the named grammar or corpus; distinguish secure observation from reconstruction, typological expectation and editorial uncertainty. Assessment: source record, short linguistic commentary and explicit evidence-limit note.

9. Academic integrity and future expansion

No invented native-language utterances, conjectural ancient alphabets or present-day population counts are presented as verified facts. Before releasing completed teaching texts, check individual forms against the relevant edition and obtain community review where practicable. The page currently contains ninety curriculum objectives plus encyclopedia background, not ninety full written chapters or audio lessons.