Back in the day before APPS we had devices. This little number was one of the devices I had growing up. Don't let anyone tell you this little guy was a calculator. The Little Professor quizzed you on math problems and had numerous levels that kept it challenging. My cousin and I both had these and they still work today. Did you have one of these or something similar? What device did you have as a kid that has been replaced in today's world with an APP?
Hope you have a fantastic Wednesday today and remember yesterdays technology paved the way for the APPS of today. :)