Posted on May 12, 2009 by clyderob
Posted on April 29, 2009 by clyderob
A set of five numbers have the following properties:
The mode of the set is 0 and 4.
The median of the set is 4.
The mean of the set is 4.
What are the five numbers in the set?
Filed under: Today's Problem  Tagged: algebra, math, mean, median, mode, statistics  1 Comment »
Posted on April 27, 2009 by clyderob
Seychelles Flag
Find the area of each section of the Seychelles flag.
The flag is x inches tall by 2x inches wide. The top edge is divided into 3 equal lengths. The right edge is divided into 3 equal lengths.
Filed under: Today's Problem  Tagged: algebra, area, geometry, math  Leave a comment »
Posted on April 22, 2009 by clyderob
Take a piece of lettersized paper and tape the short ends to make a tube. Label this tube A.
Take another piece of lettersized paper and tape the long ends to make another tube. Label this tube B.
Place each tube on a flat surface, so that they stand up on end.
Using the formula for the volume of a cylinder, find out which tube will hold more stuff (like popcorn or candy)?
Hints:
Lettersized paper is 8.5 inches wide by 11 inches tall.
To find the radius of each tube, use the circumference formula, C = 2πr
Filed under: Today's Problem  Tagged: geometry, math, pi, volume  Leave a comment »
Posted on April 21, 2009 by clyderob
Job opportunities in the science and mathrelated fields are expected to grow five times faster than other sectors over the next decade. 
But the number of students pursuing those types of careers continues to decline. 
In response, NASA and Honeywell have developed an interactive program to get students excited about careers in those fields. 


Filed under: News and Commentary  Tagged: math, science  Leave a comment »
Posted on April 18, 2009 by clyderob
On an episode of The Simpsons, another boy trades 1000 picoliters of his milk for 4 gills of Bart’s milk.
Use this Volume Convertor to see why this was a bad trade for Bart.
Hints
1000 picoliters = 0.001 microliters
Convert 4 gills into microliters.
Filed under: Today's Problem  Tagged: conversion, math, measurent, science, units, volume  Leave a comment »
Posted on April 13, 2009 by clyderob
Mr. Sutton’s class sits in a circle, each student spaced equally apart from each other.
If the 4th student sits directly opposite the 13th student, how many students are in Mr. Sutton’s class?
Extension:
If the entire 4th grade at the school sits in a larger circle, how many students are there if the 11th student sits directly opposite the 49th student?
If the entire school sits in a larger circle, how many students are there if the 34th student sits opposite the 76th student?
Filed under: Today's Problem  Tagged: geometry, math, patterns  Leave a comment »
Girls as Good at Math as Boys : Discovery News : Discovery Channel
Girls as Good at Math as Boys : Discovery News : Discovery Channel
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Filed under: News and Commentary  Tagged: math  Leave a comment »