Two Great Puzzlers from Cartalk
January 10, 2011, 12:00 am1. Cats, Dogs and Mice – Oh My!
RAY: You’re given a hundred dollars and told to spend it all purchasing exactly a hundred animals at the pet store. Dogs cost $15. Cats cost a buck, and mice are 25 cents each.
TOM: Let me get this straight. You have to spend exactly a hundred bucks and yo...
SBG: One Small Success
January 8, 2011, 12:00 amThis is a quick post describing one small reason (of many) of why I like SBG.
The setup for the gradebook is as follows: each student gets 2 shots (in class) to quiz on each topic, the grade is out of 4. They get one chance right after the end of the unit, and one a week later. If they improve fr...
Fun with Buckyball Magnets
January 6, 2011, 12:00 am
Alcumus
January 6, 2011, 12:00 amFrom Webmaths: Pretty cool website, a bit like Project Euler, but with more approachable difficulty level: http://www.artofproblemsolving.com/Alcumus/Introduction.php
Sample Problem:
The leveling up system they have could be an excellent way to get students addicted to solving some novel m...
My Favorite Podcasts of 2010
January 2, 2011, 12:00 amProject Euler
November 23, 2010, 12:00 amMy name is Dan, and I’m addicted to Euler (pronounced Oiler).
Not really, but this site is fabulous: http://projecteuler.net/ The gist of it for non-math people is that it has a list of problems, for example, find the 10,001st prime number. When you think you have your answer, then you type it...
How many pieces of Toast?
November 13, 2010, 12:00 amOnce again, OK Go has an innovative video.
Naturally, how many pieces of Toast? Answer is here.
Bonus: Did they use both sides of the bread for the drawing? Did they reuse any blank toast? How long would it take to toast all the pieces at setting 8?
Update (11-16-10): Class calculations...
(Virtual) Scavenger Hunt – Triangles (and review)
November 10, 2010, 12:00 amHere is another scavenger hunt that I made up for geometry. The scavenger hunt is a set of problems, where the only way to get to the next set of problems is to have the correct answer and hence the correct web address. It has isosceles, equilateral, triangle congruence, and logic questions on it...
How Many: Folds
November 6, 2010, 12:00 am(note: this post was previously under: Two problems, but it seemed better to split the two problems into separate posts. The other problem is found here.)
If you could, how many folds of a sheet of paper would it take for the thickness of the paper to reach the moon?
Asked for them to write...
