The reason for waiting until the bear is 15 ft away is to make sure the spray doesn’t disperse in the air. If the Pepper Spray is too spread out it will not stop the bear.

Here is the AMAZING thing … according to designer Tom Wujec, who gives the TED lecture (below), the most successful tower builders are not business school graduates or CEOs, but kindergarten students. The stats are in the video. So here is the challenge. Can you build a structure higher than the towers built by kindergarten kids?

Towers built by Kindergarten Kids AVERAGE HEIGHT = 71 CM or 28 INCH

HIGHEST TOWER from 70 challenges = 99 CM or 39 INCH

The Tom Wujec TED talk is aimed at business ‘team building’. Nevertheless, it is an interesting challenge and fun too.

TAKE 2:

In fact, the Marshmallow Tower has been around for a very long time. This challenge for middle school kids involves as many marshmallows and sticks of spaghetti needed to build the biggest tower. This is also a great end of year/semester/week challenge.

Mathspig posted this picture of an awesome marshmallow tower here.

When Marge is accused of stealing from Apu’s Quickie Mart his memory is tested. He says his memory is very good. He can recite pi to 40,000 places!!! Also on Numberphile: A Mile of Pi.

…………………………………………………………………………………….

2. The Late Show with David Letterman

Maths savant Daniel Tammet explains that he can recite Pi to 22,000 places. But wait until you hear how long it takes. Amaaaazing!!!!!

…………………………………………………………………………………….

3. Star Trek

Spock sorts out a computer with the command to calculate Pi. Cool!!!!

…………………………………………………………………………………….

4. Mathletics

Look for the second maths blooper in this clip. The folks at Mathletics get Pi wrong!!!!! Great spotting Mathologer.

…………………………………………………………………………………….

5. MTV Kate Bush

Some may prefer to listen to Apu reciting Pi to 40,000 decimal places. Nevertheless, here is Kate Bush singing about Pi.