To the person who found my purse in a shopping cart and turned it in: You will probably never see this, but I want to say it anyway. Thank you ever so much! May the Lord bless you for your kindness.
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Solving Complex Story Problems II
[Oops! I found one more post from my old blog. It apparently slipped off the back of my metaphorical desk and has been sitting with the dust bunnies.]
Here is a math problem in honor of one of our family’s favorite movies…
Han Solo was doing some needed maintenance on the Millennium Falcon. He spent 3/5 of his money upgrading the hyperspace motivator. He spent 3/4 of the remainder to install a new blaster cannon. If he spent 450 credits altogether, how much money did he have left?
[Modified from a word problem in Singapore Primary Math 5B. Stop and think about how you would solve it before reading further.]
Carnival of Mathematics #20
Quotations XVII: If People Don’t Believe That Mathematics Is Simple…
Quotes from my blackboard during October:
Experience is the hardest kind of teacher. It gives you the test first, and the lesson afterward.
What, after all, is mathematics but the poetry of the mind, and what is poetry but the mathematics of the heart?
Continue reading Quotations XVII: If People Don’t Believe That Mathematics Is Simple…
Contest for Homeschoolers, Carnivals for Everyone
The “I Rank #1 on Google!” Meme
David Ng started it. Kurt Van Etten improved it. And I heard about it from MathMom. Now, you’re invited to play, too. It’s fun!
Here Are the “Rules”
1. Search for your blog on Google. Try to find 5 different phrases that produce your blog as the #1 hit.
2. You may enclose the search phrase in quotes if necessary, but a search without quotes is preferred.
3. Score your search phrases based on the total number of hits. As Kurt wrote:
The ideal search phrase would have your blog being number one out of something like a million hits returned. As it turns out, this is much easier to do than it might sound.
How Shall We Teach Fractions?
How did you fare on the Frustrating Fractions Quiz? With so many apparent inconsistencies, we can all see why children (and their teachers) get confused. And yet, fractions are vital to our children’s test scores — and scores are important to college admissions officers. What is a teacher to do? Must we tell our children, “Do it this way, and don’t ask questions”?
Parents and teachers are tempted to wonder if the struggle is worth it. After all, how often do you divide by a fraction in your adult life? If only we could skip the hard stuff…
I Couldn’t Resist…
And since this is supposedly a teaching blog, here are some “educational” links:
Rewriting the History of Math
Here are a couple of quick links to math in the news:
- MathTrek: A Prayer for Archimedes
It turns out Archimedes was even closer to discovering calculus than we had thought.
- Tales of the golem: With many cheerful facts about the square of the hypotenuse
While Pythagoras, on the other hand, sees his place in math history threatened by an experimental disproof of the Pythagorean Theorem. [Hat tip: jd2718.]
More Fun with Hexa-Trex
My elementary Math Club students had fun practicing their math facts and “out of the box” thinking with Hexa-Trex puzzles. The object of Hexa-Trex is to find a path through all the number and operation tiles to make a true equation. The “Easy” puzzles are just the right level for my 4th-5th grade students, although they get stumped whenever the equations require Order of Operations. One girl enjoyed the puzzles enough to take our extra pages home for her dad.
Hexa-Trex puzzles were featured in the October issue of Games magazine, and now you can enjoy Hexa-Trex away from the computer with Bogusia Gierus‘s new book, The First Book of Hexa-Trex Puzzles. If you are thinking ahead to Christmas (can it be that time already?!), and if you have a puzzle lover in the family, this little book would make a fun stocking-stuffer.
Denise Gaskins' Let's Play Math 