Photo by paparutzi.
Math concepts: addition, subtraction, negative numbers, mental math, absolute value
Number of players: any number
Equipment: math cards (two decks may be needed for a large group)
One player (the dealer) shuffles the math cards and deals one card face down for each player, beginning with the player on his left and proceeding in turn around the table. Then he deals one card face up beside each face down card.
Continue reading Hit Me! (A Math Game)
[When Alexandria Jones and her family visited an excavation in southern Italy, they learned several tidbits about the ancient school of mathematics and philosophy founded by Pythagoras. Here is Alex’s favorite story.]
It hit the Pythagorean Brotherhood like an earthquake, a crisis of faith which shook the foundations of their universe. Some say Pythagoras himself made the dread discovery, others blame Hippasus of Metapontum.
Something certainly did happen with Hippasus. The Brotherhood sent him into exile for insubordination, or for breaking the rule of secrecy — or was it for proving the unthinkable? According to legend, Hippasus drowned at sea, but was it a mere shipwreck or the wrath of the gods? Some say the irate Pythagoreans threw him overboard…
Continue reading An Ancient Mathematical Crisis
Photo by alex-s.
A reader of Indian descent has been kind enough to write to me about a difference in our cultures. In the US, or at least in the parts with which I am familiar, it is common to name one’s pet after a famous person. In India, however, to name a dog after a human is a very deep insult.
I am sorry! It was not intended that way.
Therefore, I have re-named Alexandria Jones‘s dog after a Westerner. I would like to keep the tradition of naming the characters in my Alex stories after people in math history, so I am hoping this one will not offend anyone.
Continue reading Alexandria’s Dog is Now a Teacher
Photo by jetheriot.
One of the most common math questions on homeschooling discussion forums is, “How can I help my child master the math facts?” Unfortunately, when it comes to drilling facts, many children think math is spelled “B-O-R-I-N-G.” Worksheets are tedious, flash cards make them groan, and even the latest computer game is a yawner.
Continue reading Math Facts Are like Learning to Type
It took 4+ years of practice and one solid hour of sweating — which included punching and kicking his dad as hard as he could (holding the karate pad is no easy job!) and the breaking of two boards — but it was worth it.
Last night, Chickenfoot received his black belt, being presented in the photo by his instructor, Sir John.
[Disclaimer: I gave in to blogger’s poetic license for a catchy title. To tell the truth, I am sure Chickenfoot wouldn’t consider himself a math geek at all. Math is far from being his favorite subject, even though he is good at it.]
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Photo by otisarchives3.
I discovered a case of MWS (Math Workbook Syndrome) one afternoon, as I was playing Multiplication War with a pair of 4th grade boys. They did fine with the small numbers and knew many of the math facts by heart, but they consistently tried to count out the times-9 problems on their fingers. Most of the time, they lost track of what they were counting and gave wildly wrong answers.
Continue reading Diagnosis: Math Workbook Syndrome