This idea comes from Burkard and Giuseppe @ the fabulous MATHOLOGER channel. Students can make a pattern called a cardioid that pops up all over math according to Burkard.
Follow these steps. There is a pdf file below the first diagram for printing exercise sheets.
And then watch the MATHOLOGER video for a really interesting explanation.
It must be the off season. Or the heat in the Northern Summer. Or desperation. Reader’s Digest has just published 37 Math Jokes. Mathematicians are not known for the jokes. But here are 3 goodish ones.
ANS: He’ll stop at nothing to avoid them.
ANS: A roamin’ numeral.
ANS: Probably.
Here is a classic MATHSPIG JOKE:
And while we are being crazy cool kids here is a TED Talk on Mathematicians Dancing. I would call this a Mathfail because these guys DO NOT look as though they are having fun. Or, maybe, just maybe, the success of a joke or a dance is all in the delivery.
This is a vibration plate. Sand collects in the areas which do not vibrate and create patterns. The patterns are called CHLADNI figures.
In fact, the sand collects in places where standing waves – waves that cancel each other out – form. The rest of the plate is vibrating and making the sound.
You will find more info about this violin shaped vibration plate here.
The frequency of the sound creating this Chladni pattern is shown in Hertz Hz (no. pressure waves per second that his your ear) is shown for each pattern. (More about frequency in following posts)
