Over the last ten years, I have taught a Drafting class at our homeschool co-op classes. The first time I taught the class I found a book on Ebay, Exploring Drafting, fundamentals of technology by John R Walker (I have an older version). I didn't know anything about the book other than the title chapters covered what I wanted to teach and it was aimed at high school students.
Triangles- 45/90 degree and 30/60 degree
Pencils- 4H and H leads
Graph Paper (1/4")
Printer paper (blank paper)
You might find a drafting kit with many of the required tools that will save you money. You will need to add a T-Square and drawing board to most kits.
Other tools are mentioned in the book, but the ones listed above will be enough to do the exercises in the book.
For my ten week class, I cover the information in Chapters 3-12, and Chapter 23. We move quickly and I expect a lot from my students, but they progress from not knowing anything about drafting to producing some very impressive work including a final design project.
Consider adding Drafting Fundamentals to your student's high school curriculum. He/she may find an affinity for a skill they didn't know existed.
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