I described in a previous post our family tradition of hiding one present on each child’s birthday. Today’s hidden present rhyme was more successful than recent ones — the birthday girl was temporarily stumped and needed a hint from her older sister. Can you guess where they found the gift?
As always, the outside of the envelope is the same:
I’m your last present.
Can you find me?
I’m hiding some place
That you can’t see…
For anyone who can’t make it to Peoria this weekend but is still interested in my math workshops — and just in case we run out of handouts at said workshop — I am posting my math handouts here. These are pdf files, so if you have a sluggish dial-up connection like ours (ah, the joys of rural life!), you can right-click and save each file as a download.
This week’s Carnival of Homeschooling treats us to snippets of poetry along with a variety of informative, inspiring articles about education in general and homeschooling in particular. The Tutor writes:
It cannot be a coincidence that it is National Poetry Month and I’m hosting the Carnival of Homeschooling this month. I mean a homeschooler can never resist the chance to turn something into a learning opportunity. So, prepare a nice cup of tea, find a comfy spot, call the kids to come read over your shoulder, and let’s away to the Carnival!
Two roads diverged in a wood, and I —
I took the one less traveled by,
And that has made all the difference.
— from The Road Not Taken by Robert Frost
I missed getting an entry into the latest Carnival of Mathematics, which went up a day early at Science and Reason. (Serves me right for procrastinating!)
As usual, most of the articles are well over my head.
The carnival begins with a tribute to Field’s Medalist Paul Cohen (April 2, 1934 – March 23, 2007), the man who settled the first of the famous Hilbert Problems, the Continuum Hypothesis. Then come the math articles.
Here are my favorites:
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[Feature photo above by Remy Steinegger via Wikimedia Commons (CC BY 2.0).]
Another look at the Bill Gates proportion… Even though I couldn’t find any data on his real income, I did discover that the median American family’s net worth was $93,100 in 2004 (most of that is home equity) and that the figure has gone up a bit since then. This gives me another chance to play around with proportions.
So I wrote a sample problem for my Advanced Math Monsters workshop at the APACHE homeschool conference:
The median American family has a net worth of about $100 thousand. Bill Gates has a net worth of $56 billion. If Average Jane Homeschooler spends $100 in the vendor hall, what would be the equivalent expense for Gates?
[Feature photo above by Baluart.net.]
A friend gave me permission to turn our email discussion into an article…
Can you help us figure out how to figure out this problem? I think we have all the information we need, but I’m not sure:
The average household income in the United States is $60,000/year. And a man’s annual income is $56 billion. Is there a way to figure out what this man’s value of $1mil is, compared to the person who earns $60,000/year? In other words, I would like to say — $1,000,000 to us is like 10 cents to Bill Gates.
My algebra students could stand to hear this, too:
(2)(-4x2)n is not equal to (-8 )nx2n.
AAAAAARRRRGGGHH!!!!
From Secret Message to My Calculus Students at Learning Curves blog.
These puzzles look like a lot of fun for whole number and integer arithmetic review. I think they would make a great warm-up at the beginning of a class or math club meeting.
Hat tip: MathPuzzle.com
[Feature photo above by Tobias Wolter (CC-BY-SA-3.0) via Wikimedia Commons.]
If seven people meet at a party, and each person shakes the hand of everyone else exactly once, how many handshakes are there in all?
In general, if n people meet and shake hands all around, how many handshakes will there be?
Our homeschool co-op held an end-of-semester assembly. Each class was supposed to demonstrate something they had learned. I threatened to hand out a ten question pop quiz on integer arithmetic, but instead my pre-algebra students presented this skit. You may adjust the script to fit the available number of players.
Does this proof at squareCircleZ blog mean that, if I get nothing done today, I can cross off everything on my list?
Denise Gaskins' Let's Play Math 
