Mr. Welch's Blogarhythms is the site for 6th grade math at Baker school. Here you will find weekly syllabi, challenge problems, and interesting math-related links. You can also leave comments and questions for the math master himself.

Tuesday, November 28, 2006

Geography Bonus #2

What are the three countries in the world whose names DO NOT contain ANY of the letters in the word mackerel?

DO NOT POST THE ANSWER.


a pair of mackerel.

Monday, November 27, 2006

Geography Bonus #1

For geography links go to this site.

BONUS #1

Post the names of 12 countries whose name ends with the letters an.

Wednesday, November 22, 2006

Happy Thanksgiving!

I hope that you all have a wonderful Thanksgiving.

Special thanks to all those who participated in today's epic clash between Tanzania and Zimbabwe. Although the Tanzanians prevailed 6-4 in the end, it was a great back-and-forth affair with great goals, stellar saves, and slippery slide-tackles.


Tanzania


Zimbabwe

Perhaps we can stage a rematch next Friday if all the classes E-a-r-n E-x-t-r-a R-e-c-e-s-s.

Flags taken from this site.

Saturday, November 18, 2006

Number Systems Report

Write a 3-paragraph report that examines three (3) of the number systems we have studied this year.

In each paragraph you should answer the following questions:

1. How does this system work? What are the building blocks?
2. Does this system have place value?
3. What digits, if any, does this system use?
4. What is the biggest # you can make in this system?
5. What trades can you make in this system? That is, are there different ways to make the same number?
6. How would you rate this system? Is it efficient and easy to use?

ALSO include at least one example or diagram showing how to make a number in this system. For your example/diagram, pick a number bigger than 100 (that's "one hundred," not "one zero zero").

Saturday, November 11, 2006

Calendarial Extra Credit

If Sep- means seven (septillion), Oct- means eight (octopus), Non- means nine (nonagon), and Dec- means ten (decimal), then why is

September the 9th month of the year;
October the 10th month of the year;
November the 11th month of the year; and
December the 12th month of the year?

DO NOT post the answer on the website. I will collect all correct responses on Monday.
Enjoy!


An Octopus has eight tentacles, not ten.

Saturday, November 04, 2006

Conference Cartoon

N.B. You can click on the cartoon below to enlarge it.

A preview of your parent-teacher conference?
Cartoon by Mr. Welch.