The Lineup: Who Doesn’t Belong and Why
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 …
Why do the Zeros Disappear When You Press Equal?
by Ihor Charischak This article first appeared in CLIME Connections, Volume 7, No. 1, 1994. 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 …
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Buffon’s Needle Experiment
See the lesson!