Teaching World peace to 4th graders

Ok, this is not so much for our practices but it's quite inspiring. Enjoy.

http://www.ted.com/talks/john_hunter_on_the_world_peace_game.html

Math cheat

What is the smallest positive integer by which 60 can be multiplied to make the product a perfect square?

NB:

Integers - natural numbers (1, 2, 3, 4,...), their negatives (..-4, -3, -2, -1) , and zero; from the root "untouched"; simply virginal numbers

Percentages

Just for fun

Enjoy. This is fun to watch.

http://www.youtube.com/watch?v=M4vqr3_ROIk

Math cheat

A number that is divisible by 1, 2, and 3, will ALWAYS be divisible by ___?

Problem of the week.

Lucas goes to Papa's cafe for lunch every 2 days. Isaac goes there for lunch every 3 days. Tyler goes there for lunch every 5 days. Aaron goes there every 6 days. If they all had lunch in Papa's Cafe today, in how many more days will they all have lunch there on the same day?

Hello, and Welcome to SMA Logic Club.

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