Once upon a time, my father (Dr. Min Aung) searched for PPT countdown timers to be used in his teaching. He couldn’t find any(!), except one, which was expensive and didn’t fit his purpose. So, he asked me to make timers for him and I did. After using them for a while, he advised me to sell it. Thus, LTC Clock was born, and his classroom management workload became MUCH LESS ever since!
LTC stands for Learn Teach Center, which is a website developed for my father’s students.