Let’s Play Math!

Entries categorized as ‘Grades 5+up’

Crazy 4 Math Contest

July 15, 2008 · No Comments

I heard of this contest in an e-mail from ClickSchooling:

Kids, share your creative math ideas! Describe how you use math in any activity you love to do — a sport, game, craft, hobby, or anything else.

Send in a description of the activity and it uses math, as well as any drawing(s) or diagram(s). There are many great prizes to be won. Please ensure you’ve read and understand our contest’s rules and regulations before entering.

Sounds like fun! If you want to enter, act quickly. Entries must be submitted online by July 30th. Visit Crazy4Math.com for more information and to check out the winners from previous years.

Categories: Activities · Grades 5+up · Middle elementary
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Summer: Time to Sharpen Math Skills

June 24, 2008 · No Comments

[Photo by Vox Efx.]

School’s out — and what could be more fun in the lazy, hazy days of summer than to study math? Check out these articles from Maria Miller of Homeschool Math Blog:

How to Help a Student Who is Behind in Math

Keeping Your Math Skills Sharp Over The Summer

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Categories: Grades 5+up · Middle elementary
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Math Game: What Number Am I?

June 16, 2008 · 2 Comments


Photo by jaycoxfilm.

Math concepts: mental calculations, math vocabulary, and anything else you want to include
Number of players: any number, but I think it works best with two players who alternate asking questions
Equipment: imagination and, if necessary, scratch paper

Many years ago, I read a magazine article by mathematical music critic Edward Rothstein, wherein he described a game he invented for his daughter:

“What number am I? If you add me to myself, you get four.”

Rather than explaining the rules of the game, let me tell you a story…

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Categories: Family · Games · Grades 5+up · Middle elementary · PK-1st grade
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Hit Me! (A Math Game)

May 29, 2008 · No Comments


Photo by paparutzi.

Math concepts: addition, subtraction, negative numbers, mental math, absolute value
Number of players: any number
Equipment: math cards (two decks may be needed for a large group)

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Categories: Games · Grades 5+up · Middle elementary
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The Function Machine Game

May 13, 2008 · 7 Comments

Math concepts: odd numbers, even numbers, greater-than/less-than, rounding off, addition, subtraction, multiplication, division, fractions, negative numbers, prime numbers, square numbers, problem solving, mental math
Number of players: two or more
Equipment: pencil (or pen) and paper for every player

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Categories: Games · Grades 5+up
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Substitute Teacher Experiments with Combinatorics

April 16, 2008 · 1 Comment


Photo by peigianlong.

Here is a puzzle from Just a Substitute Teacher:

Lesson plan entry: “Hand out worksheet packets and have students staple before starting. They know what to do.”

Sounds simple enough! Four numbered sheets, eight total pages, printed front and back. What could go wrong?

Do you know how many possible combinations four pieces of paper can be arranged for stapling?

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Categories: Grades 5+up · Puzzles
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Math Games by Kids

April 10, 2008 · 4 Comments

Caution children at play
Photo by Mike Licht, NotionsCapital.com.

The cold came back and knocked me flat, but there are compensations. The downtime gave me a chance to browse my overflowing bookmarks folder, and I found something to add to my resource page. Princess Kitten and I enjoyed exploring these games and quizzes from Ambleweb.

Math games by elementary students

Each game was designed by (or at least with the help of) 4th-6th grade students at Ambleside CE Primary School.

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Categories: Grades 5+up · Middle elementary · Resources
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In Between Sneezes…

March 27, 2008 · 10 Comments

Sitting at home with a cold, tired of watching TV and playing video games, stumbled upon…

A great theorem from math history

The Infinitude of Primes

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Categories: Algebra & beyond · Grades 5+up · Math Humor
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Subtracting Mixed Numbers: A Cry for Help

March 26, 2008 · 17 Comments

Calculations
Photo by powerbooktrance.

Paraphrased from a homeschooling math discussion forum:

Help me teach fractions! My son can do long subtraction problems that involve borrowing, and he can handle basic fraction math, but problems like 9  -  5 \frac{2}{5} give him a brain freeze. To me, this is an easy problem, but he can’t grasp the concept of borrowing from the whole number. It is even worse when the math book moves on to 10 \frac{1}{4}  -  2 \frac{3}{7} .

Several people replied to this question, offering advice about various fraction manipulatives that might be used to demonstrate the concept. I am not sure that manipulatives are needed or helpful in this case. The boy seems to have the basic concept of subtraction down, but he gets flustered and is unsure of what to do in the more complicated mixed-number problems.

Let’s take a quick look at what is involved in a calculation like this…

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Categories: Grades 5+up · Math monsters
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Happy Pi Day, 2008!

March 14, 2008 · 8 Comments

funny pictures

Now there is an ancient Greek letter,
And I think no other is better.
It isn’t too tall,
It might look very small,
But its digits, they go on forever.

— Scott
at Mrs. Mitchell’s Virtual School

Time to celebrate

Are your students doing anything special for \pi Day? After two months with no significant break, we are going stir crazy. We need a day off — and what better way could we spend it than to play math all afternoon?

If you need ideas, here are some great \pi pages:

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Categories: Activities · Algebra & beyond · Grades 5+up · History · Middle elementary
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Planning Ahead: St. Patrick’s Day

March 13, 2008 · No Comments

Sunlight through clover
Photo by Brittany G.

I found this cute lesson on Meeyauw’s blog:

Heads or Tails: Curve-Stitching The Green

And that sent me searching for more St. Patrick’s Day math:

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Categories: Activities · Grades 5+up · Middle elementary
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“Monday Math Madness” link

March 7, 2008 · 12 Comments

math puzzle
Photo by Behdad Esfahbod.

I have been busy with the end of Math Olympiad season and getting ready for the MathCounts state test this weekend, but I wanted to post this link before it’s too late. You have until Sunday evening to send in your answer to the first…

Monday Math Madness puzzle

Combinatorics is my weak area, but I gave it a try. How about you?

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Categories: Algebra & beyond · Grades 5+up · Puzzles
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