Math = Love: September 2018

## Wednesday, September 19, 2018

### Equilateral Triangle Puzzle from Puzzle Box, Volume 1

This school year has been CRAZY. Crazy busy. Crazy exhausting. Crazy good. Crazy, crazy, crazy. The other day, I was feeling a bit overwhelmed with the amount of stuff I had to get done. But, at the same time, I just needed to take a bit of a break. My students leave at 3:05, but our contract time doesn't end until 3:30. So, one day with 25 minutes to fill, I decided to tackle one of the puzzles I had typed up this summer for my puzzle table.

This equilateral triangle puzzle comes from Puzzle Box, Volume 1 (affiliate link) from Dover Publications. This is the first book in a series of three puzzle books that are edited by the Peter and Serhiy Grabarchuk. This specific puzzle is by Richard Candy.

Each volume has 300 puzzles, and I have found over a hundred puzzles between the three volumes that I would like to adapt to use in my classroom some day. If you love puzzles or if you are looking for resources to teach your students to reason logically, Puzzle Box, Volumes 1-3 (affiliate link) are the books for you!

You can get a great taste of what types of puzzles they have to offer you and your students by looking at the free Amazon Preview! Just click the "Look Inside" button for each book. If you're logged into Amazon, you can click "Surprise Me!" on the left side of the page. This will let you see quite a few of the puzzles inside the book for free. I typed up my first Puzzle Box puzzle from the free preview. Then, I did some more looking around and knew I had to order it!

So, how does the puzzle work?

You are given six quadrilaterals. These are printed on three different colors of paper. You must arrange the six pieces to form a plain equilateral triangle. Pieces of the same color are not allowed to touch each other, not even at a corner. Pieces can be rotated but not overlapped.

As I started trying to solve this puzzle, I went through several thought processes.

How in the world is this going to make an equilateral triangle?

Hmmm...let me try this.

Nope. This is impossible. There is no way these pieces could make a triangle.

Maybe I made a mistake when I created the pieces in Microsoft Publisher.

Wait...what if I try this?

Oooh...I'm so close. Maybe this is possible.

What happens if I move this here and another piece there and... I got it!

This was fun!

Now, I can't wait to try this with my students! My students are currently working through a collection of puzzles on their "Puzzle Passports," so I will have to wait a bit to put this out. Or, maybe I should add magnets to the pieces and stick it up on the dry erase board to see what students do with it...

Now, I just have to add that to my never ending to do list!

Want to try this puzzle yourself? I have uploaded the files here.

## Monday, September 3, 2018

### Monday Must Reads: Volume 47

Full Disclosure: I started this post over a week ago with the hopes of posting it for LAST Monday's Must Reads. When I didn't finish it on Sunday or Monday, I started to think I would post it on Tuesday as a one-day-late version of Monday Must Reads. Now, here we are, an entire week later on another Monday. I think every year I forget just how crazy the beginning of the year is. Plus, this year is extra crazy with teaching at a new school and having new preps!

I hope that you can find some inspiration in these share-worthy tweets from the past few weeks.

Heather Moore shares a link to the US Math Kangaroo website where you can find all sorts of awesome math problems for your classroom!

From just a quick glance, I know I need to spend some quality time here looking for problems to use with my students! Here are a few of the 2018 sample questions that caught my eye.

Can't get enough of Monday Must Reads? Sam Shah is compiling his own posts with his favorite twitter posts and ideas. I love reading his commentary and being reminded of ideas that I've seen and since forgotten. Plus, I get a chance to see tweets from people I don't follow YET.

Looking for classroom decoration ideas? Check out Jo Morgan's Maths Display Page.

I needed to see this quote shared by Courtney Cochran.

Jessica shares some awesome new posters on her blog!

 Image Source: https://algebrainiac.wordpress.com/2018/08/16/posters-2018/
Ashli shares an image that could spark some interesting conversations.

David Butler shares an interesting strategy game to play with students called the Daisy Game.

Heather Paulson shares her awesome table numbers!

I really like this problem from the UK Mathematics Trust.

I recently ran across the Maths wi nae Borders twitter account and found several lovely puzzles.

This task from Teejay Maths also caught my eye!

Gemma Hoy shares a beautiful bulletin board!

Kristen Rudd offers up a yummy WODB problem.

Jill Church shares an awesome beginning of year project that doubles as a beautiful classroom display!

Zach Berkowitz shares some cool puzzles that might make an appearance in my classroom later this year!

Samuel Down shares a photo of his awesome math clock.

I love Becky Roloff's idea of having a Pi Day Coloring Contest.

Check out this mailbox in Amber Longhi's classroom!

I love how Jennifer Fairbanks displays students' desmos creations!

Julie Chamberlain's organization of her Puzzle Crate is inspiring! Find this puzzle and more to download on my puzzles page!

Check out this great class culture building activity from Mandy Fernandes!

I've seen the idea of human box plots floating around on twitter for awhile. But, I really like the look of this one from Melissa Pool.

I LOVE this puzzle bulletin board from Mrs Tang!

Paul Jorgens' use of Desmos is always inspiring. I love this process of having students draw a graph that represents a story about a sport and then having other students determine what story the graph is telling.

I really like how Sam Rhodes combined WODB with Algebra Tiles!

Having taught science in the past, I love Lauren Stewart's idea of starting the year off with a black box activity.

Another awesome idea from another awesome science teacher: Kate McNabb! Students first constructed outlines of their bodies on the wall. Then, they were given anatomical elements to locate and label.

I love how Ms. Sylvester used math to cover this window in her classroom. So beautiful!

Jamie Back's recent blog post about 3D printing flowers from polar graphs has me wishing my school had a 3D printer!

 Image Source: https://makinginmath.wordpress.com/2018/08/20/making-3d-printed-flowers-from-polar-graphs/
Maya Maroun brings the classic locker problem to an entirely new level by using two color counters as manipulatives. Brilliant!

Mr. Derstein inspires with a pirate themed classroom for what was surely a memorable learning experience!