Any fool can know. The point is to understand.

— Albert Einstein

CREDITS: Background photo courtesy of Backgrounds Etc (CC BY 2,0) via flickr

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Month: October 2013

## The Point Is To Understand

## Logic: The Centauri Challenge

## More Logic Puzzles

## A Math Major Talks About Fear

## Things To Do with a Hundred Chart #30

## Share Your Ideas

## Math Teachers at Play #67 via Moebius Noodles

## Things To Do with a Hundred Chart #29

## Share Your Ideas

## Maze Game: Land or Water?

Any fool can know. The point is to understand.

— Albert Einstein

CREDITS: Background photo courtesy of Backgrounds Etc (CC BY 2,0) via flickr

Another fun discovery from the #MTBoS Challenge: Brian Miller (@TheMillerMath) posted this interstellar puzzle on his blog today.

[Right-click image to download a pdf you can print for your students.]

If you liked the Centauri Challenge, you may also enjoy the following blog posts:

I’ve dipped my toes in Twitter lately (as part of the Explore #MTBoS program) and been swept up in a crashing tsunami of information. There’s no way to keep up with it all, but I’ll let the tide wash over me and enjoy the tidbits I happen to notice as they float by. For instance, yesterday I discovered a writer who offers tip on writing about injuries and was able to get some great advice for Kitten’s sequel to her first novel.

And then today, Steven Strogatz posted a link to Saramoira Shields, a new blogger I might never have discovered on my own. I think you’ll enjoy her video:

Here’s one more entry for my 20+ Things to Do with a Hundred Chart post, thanks to David Radcliffe in the comments on Monday’s post:

**(30****)** Can you mark ten squares Sudoku-style, so that no two squares share the same row or column? Add up the numbers to get your score. Then try to find a different set of ten Sudoku-style squares. What do you notice? What do you wonder?

[Suggested by David Radcliffe.]

Can you think of anything else we might do with a hundred chart? Add your ideas in the Comments section below, and I’ll add the best ones to our master list.

This month’s Math Teachers at Play blog carnival features games, activities, and playful math from preschool to high school. Here are just a few treats from the carnival:

- proofs for elementary students
- Barbie does math
- the dangers of timed testing
- a puzzle for factoring trinomials
- Minecraft math
- coordinate graph-iti
- and much more

It’s great fun! If you’re interested in how children learn math, check it out:

Here’s a new entry for my 20+ Things to Do with a Hundred Chart post:

**(29****)** Blank 100 Grid Number Investigations: Challenge your students to deduce the secret behind each pattern of shaded squares. Then have them make up pattern puzzles of their own.

[Created by Stuart Kay. Free registration required to download pdf printable.]

Can you think of anything else we might do with a hundred chart? Add your ideas in the Comments section below, and I’ll add the best ones to our master list.

This was a fun activity from Moebius Noodles for our PK-1st grade *Homeschool Math in the Park* group. The children take turns making a maze and setting a dinosaur inside. Then the other dinosaurs (parents or siblings) try to guess whether their friend is on the land or in the water.

**Player #1**

**(1)** First, draw a big circle on the white board. This is your lake.

**(2)** With a finger or a bit of cloth, erase a small section of the circle to create the opening for your maze.

**(3)** Starting at one edge of the opening, draw a random squiggle inside the circle. Make your squiggle end at the other edge of the opening.

**(4)** Set your dinosaur anywhere inside the maze.

**Player #2**

**(1)** Now it’s your turn to guess. Is the dinosaur standing on the land? Is it swimming in the water?

**(2)** How will you figure out if you guessed right?

**(3)** Check by jumping across the lines of the maze. Each jump takes you across a boundary: *Splash!* (Into the water.) *Thump!* (Back on the land.) *Splash! Thump!* … Until you reach the dinosaur inside.

**(4)** Or go to the maze entrance and walk your dinosaur along the path. Can you find your way?