EDUCATION & SERVICE · 2019–2025 ARCHIVE · BUILT
When I reopened the files from my teaching years, the recurring documents stood out before the employers did. They included a 207-page grammar book, an eight-session syntax book and workbook, versions of the same lecture handout from 2019 and 2022, and a written process for producing school-specific practice tests.
This is a record of how I learned to turn questions into an order of explanation, explanations into teaching material, and repeated production into a documented workflow. The habits behind my current research notes and product documentation took shape during this period.
Questions became the order of a book
The February 2019 edition runs from sentence structure through tense, conditionals, clauses, agreement, comparison, and inversion in four parts and sixteen units. Its preface preserves the questions I kept encountering in class: how to handle sentences that did not sit neatly inside the five-pattern model, whether “future tense” was an accurate label, and when grammatical terminology hindered understanding.
I arranged those questions into a sequence that could be taught from beginning to end. The archived 2019 file and 2021 revision show changes to the cover, subtitle, pagination, examples, and explanations. The current Kmong product page lists the work as a 207-page PDF ebook with four parts and sixteen units.
The page currently shows one public purchaser review and a 5.0 rating. A separate account-level transaction count cannot be treated as sales of this particular book, so I do not report a sales total or revenue. The defensible result is narrower: the book was offered for sale and one public purchase review remains visible.
The course book and workbook had different jobs
An eight-session syntax course from the same year survives as a paired course book and workbook. The course book moves from subjects and sentence structure through non-finite verbs, tense and passive constructions, modals and conditionals, the three major clause types, comparison, and inversion.
The workbook sends learners through the same eight sections in four passes: usage choice, translation, error detection, and fill-in-the-blank work. The structure separated instruction from practice while checking the same idea in several forms. I have not published page images because some exercises may include third-party exam material or examples.
A lecture handout kept changing with the class
A Complete Understanding of the Subjunctive survives in a 2019 Kimyoung special-lecture file and a 2022 Pcube classroom version. Both carry my name and retain the same title and core explanation. A Kimyoung announcement from 2019 independently lists my name with the same lecture title. The two files show that the handout was revised and reused in a new teaching setting.
Test production eventually became a written process
A 2021 internal briefing from EG English lays out the production of school-specific practice tests. It covers reconstructing a previous paper’s page geometry, editing listening audio, arranging questions and scores, and checking B4 output. The document identifies its author as “EG main-campus English instructor Byungwoong Yoo.”
The briefing also contains internal figures about question matches and class size. I could not independently verify them, so they are excluded here. Student names, school exam text, counselling records, and grades are also excluded. The usable evidence is the documented production process itself.
What the record supports
The public record supports a 207-page ebook listing, one purchaser review, and the official 2019 lecture announcement. My archived source files support the 2019 completed book and 2021 revision, the eight-session syntax pair, the 2019 and 2022 conditional-grammar handouts, and the 2021 test-production briefing. A government-issued certificate records my Pcube teaching period as 1 January 2022 to 30 June 2025, but the certificate contains personal data and is not reproduced.
Exact book sales, revenue, changes in student performance, and sole authorship across every institutional file remain unverified. The lasting thread is more modest and more useful: teaching trained me to build explanations, revise them against use, and document recurring work.
Public evidence
- Kmong — grammar ebook listing: 207 pages, four parts, sixteen units, and one public review
- Kimyoung — 2019 holiday programme notice: Byungwoong Yoo and the conditional-grammar lecture title
- Leadwin instructor listing: Byungwoong Yoo, transfer-exam English
Project record
- Period: 2019–2025 public and archived records
- Role: explanation design, textbook writing and revision, workbook design, and assessment-production documentation
- Outputs: 207-page grammar ebook, eight-session syntax book and workbook, revised lecture handouts, and a school-test production briefing
- Externally verified: public product page and one review, official Kimyoung lecture notice, and Leadwin instructor listing
- Not verified: unit sales, revenue, learning outcomes, and sole authorship of the full institutional file set