In-house instructor training at TechEL in Yongin: a record-setting full day with AI tools?
The story of a day that really lasted all day. Five a.m.
I rubbed my eyes, got up, packed a box of snacks, and set off for Yongin at six.
Today I ran a full-day training on using AI tools for in-house instructors at TechEL, a company specializing in SiP-based semiconductor back-end processing.
It was not easy from the very start.
The moment I arrived, the projector wouldn’t connect!
In the end I climbed onto the desk and plugged in the HDMI cable myself, and finally got everything set up.
I was already sweating before the training even started.
The planned curriculum?
Adjusting on the spot based on live feedback. Early in the session, the in-house instructors received the materials I had prepared, and one of them had something to say.
"We probably need the morning content less." After receiving this feedback, I held a short discussion with the participants and then switched the curriculum to the hands-on content planned for the afternoon.
I learned something from all this.
That training only comes alive when it is tailored to the ‘people’ it serves.
Even lunch took quick thinking!
We ordered lunch boxes in the middle of the training.
We finished eating as soon as the lunch boxes arrived, then rushed to revise the materials for the afternoon session that followed.
The lunch break was short, but my mind was already busy reorganizing the content.
Making it real to keep people engaged. In the afternoon, I had already received the materials each in-house instructor would use for their own 2-hour sessions. I edited them and ran a demo lecture to show concrete ways to apply the tools.
We traded feedback on the spot, revised the content right away, and, factoring in the projects participants were likely to bring, completed a training plan tailored to each person’s situation.
In short, it went beyond simple tool training and produced results 'ready to apply on the job right away'.
Ending the day with one long exhale. After the training, I got back in the car and made the long drive home.
Even now, as I write this, the faces of the TechEL in-house instructors I met today are vivid in my mind.
Preparation and surprises, improvisation and coordination, feedback and revisions.
Today truly earned the word “record-breaking.”
Today’s training at a glance Time Main
Details Notes 06:00 Leave for Yongin Snacks packed 09:00 Arrive on site and set up Fixed the projector problem myself 10:00 Curriculum adjusted on the spot Morning content → switched to a hands-on focus 12:00 Lunch boxes Revised training materials at the same time 13:00 Lecture based on real cases Focused on demo lectures and feedback 17:00 Training ends, drive home Long-distance drive Today’s takeaways One-line review "I gave a full day’s worth of energy
but all I have left is satisfaction!"
