# Math(s) Teachers at Play #88 via mathematicsandcoding

From elementary to high school, manipulatives to Minecraft, there’s plenty of fun to be had at this month’s math education blog carnival:

Enjoy!

So, here is issue 88 of the Math(s) Teachers at Play blog carnival. This acts as a round up of some cool blog posts that have been published since issue 87 over at cavmaths. As usual people have submitted entries, which I will supplement with some posts that I have really enjoyed reading in the last few weeks.

[Feature photo (top) by Pratham Books, 88 cards photo by Bailey Weaver, both via Flickr (CC BY 2.0).]

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# Noticing Fractions in a Sidewalk

My daughters didn’t want to admit to knowing me, when I stopped to take a picture of the sidewalk along a back street during our trip to Jeju. But aren’t those some wonderful fractions?

What do you see? What do you wonder?

Here is one of the relationships I noticed in the outer ring:

$\frac{4 \frac {2}{2}}{20} = \frac {1}{4}$

And this one’s a little trickier:

$\frac{1 \frac {1}{2}}{12} = \frac {1}{8}$

Can you find it in the picture?

Each square of the sidewalk is made from four smaller tiles, about 25 cm square, cut from lava rock. Some of the sidewalk tiles are cut from mostly-smooth rock, some bubbly, and some half-n-half.

I wonder how far we could go before we had to repeat a circle pattern?

# Murphy Strikes My Paperbacks :(

Murphy’s Law struck today, and the paperback books that looked so good in the proof copies turned out to have a cover glitch, at least in the ones I ordered from Amazon. I’m working with CreateSpace to make sure it gets straightened out—but that means the books may show up as “unavailable” for awhile.

As with any print-on-demand glitch, if you got a badly printed book you can ask Customer Support to replace it.

It could be worse. The interior of the book is fine, at least in my copy. And of course, the ebook versions are totally unaffected.

If you are trying to use the discount code for newsletter subscribers, remember that it’s good through the end of the month. I may even extend the expiration date, if this cover problem persists, but I sure hope to have it fixed in a couple of days.

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# 30% Discount for Email Newsletter Subscribers

[Feature photo (above) by Glen Wright via Flickr (CC BY 2.0).]

Wouldn’t it be wonderful if math was something your children WANTED to do?

With the Math You Can Play series, your kids can practice their math skills by playing games with basic items you already have around the house, such as playing cards and dice.

Paperback editions of the first two Math You Can Play books will be out any day now. If you’re subscribed to my Tabletop Academy Press Updates email newsletter, I’ll be sending you a 30% discount code by Thursday, or as soon as both books pass through the last few publishing hoops…

Claim your two free learning guide booklets, and be one of the first to hear about new books, revisions, and sales or other promotions.

# Education Bloggers: Share Your Post!

If you are a homeschooler or classroom teacher, student or independent learner, or anyone else who writes about math, now is the time to send in your favorite blog post for next week’s Math Teachers at Play (MTaP) math education blog carnival.

Don’t procrastinate: The deadline for entries is this Friday, July 24. The carnival will be posted next week at mathematicsandcoding.

If you haven’t written anything about math lately, here are some ideas to get your creative juices flowing…

# Playful Math Snacks: Proofs Without Words

The July “Let’s Play Math” newsletter went out earlier this week to everyone who signed up for Tabletop Academy Press math updates.

Inspired by my recent Infinite Cake post, this month’s issue focuses on math proofs without words. What fun!

If you missed this month’s edition, no worries—‌there will be more playful math snacks next month. Click the link below to sign up now, and we’ll send you our free math and writing booklets, too!

And remember: Newsletter subscribers are always the first to hear about new books, revisions, and sales or other promotions.

# Most Difficult Math Fact in the Whole Times Table

### Happy Multiplication Day!

For help learning the Times Table facts, check out my multiplication blog post series:

Encourage your family to play with math every day:

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