In each problem below you will find a group of four numbers or expressions. Three of the numbers belong to the same family. The other number is trying to fool you into thinking he/she belongs with the other three by wearing a disguise. Pick out the number or expression and explain why that number doesn’t…
Read moreWhy do the Zeros Disappear When You Press Equal?*
by Ihor Charischak The big push over the past few years has been for teachers to use calculators. Unfortunately, the issue is charged because some parents have a hard time supporting teachers who use calculators before their children have learned their algorithms. Though I am a strong proponent for the use of calculators, I have to…
Read moreBuffon’s Needle Experiment
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