Sign up for an Award
Participate with your entry in one of our professional or student awards.
Sign up for an awardLearn more:
Unsupported browser
You are using an outdated browser. Please upgrade your browser to improve your experience.
Have you ever had difficulty expressing your pattern?
We would like suggest pattern pen for that problem.
pattern pen is a smart pen that can immediately scan and print out the appropriate pattern for the each situation.
Hoseo University
Asan-si, South Korea
Hyeonsik Cheon,
Hoseo University