Dr. Cotter on Division

Long division used to be considered the ultimate goal of arithmetic. An earlier division algorithm was so complicated it wasn’t taught until college. Even today some students learn a mnemonic in order to remember what to do next. One example is DMSB … [Read more...]

2017 Summer Game #17: Remainders Game

Summertime here in Texas means VBS. For those that may not know, VBS stands for Vacation Bible School. My children are too old to attend, so we help with the program. This year, I was the decorations coordinator. I find it a demanding position … [Read more...]

2015 Summer Game #11: Equal Quotient

Summer is almost over. I know, I know! Some of you are clapping your hands over your ears and muttering “I can’t hear you, I can’t hear you”, but it’s happening. Remember when you were a kid and summer lasted forever? My sister and I spent the summer … [Read more...]