It’s been a little while since I did the original post about the hundred chart I put together for my son and his reaction to it. Finally, I have a professionally done (thank you, Ever!) chart you can download, play with, explore and, if framed, admire (it has a certain beauty to it, don’t you think). The chart prints to 1 letter page. Additionally, you can print individual cards and play with those.
Download the low-res PDF hundred chart.
Download individual cards to print.
Download full size high resolution chart. It prints to a 30×60 poster.
As you might know, Maria collects Hundred Charts like the one she shared in our newsletter. So now I’m curious to see other charts in her collection. Have you come across different versions of the good ol’ Hundred Chart? Please let us know!
And if you are looking for games to play with the chart, check out Let’s Play Math post about 20+ things to do with a hundred chart.

Welcome to adventurous math for the playground crowd! I am Moby Snoodles, and I love to hear from you at moby@moebiusnoodles.com
The book cover is ready! This is the version we will be using in the first print and ebook run. Much appreciation to Ever Salazar for many little miracles that turn mere words into real kids playing with real math.
Volunteer reviewers are hard at work giving us comments and suggestions, as we prepare the book for copy editing. At all stages, this book is a community effort!
We reviewed three books on our blog, all of them about the topic of unitizing – that is, making one unit out of several individual entities.
“Unlikely additions” invites you to think what two units you can add to make a given other unit. For example, 1+1=5 if you add wheels of a bicycle (2) and wheels of a tricycle (3).
“Clap, drum and shake it” and “Meadow count” are about gross motor mathematics. In particular, the units are formed out of large movements, then multiplied into patterns – sort of like a dance!

On our Facebook stream, people discuss their metaphors for teaching, inspired by the “square thoughts” picture Zekeria Karadag shared. Pei-Jung Lee sees herself as a humble servant to the desire of learning. Yelena McManaman paves a road, or at least adds lines to it. Think Magnet likes the quote, “”Education is not the filling of a pail, but the lighting of a fire.” What is your metaphor for teaching?
One of my eccentric hobbies is collecting creative Hundred Charts. The number system we use today is the pinnacle of thousands of years of international research and development. Hundred Charts help us notice some of the patterns that went into this incredible invention. This fresh addition to my collection comes from a young girl named Nomi. Her dad Dor Abrahamson helped Nomi develop the idea into this neat puzzle. Can you figure out how it works? Hints are below the picture.

Hint 1: think of the sum of digits.
Hint 2: think of the number of numbers with each sum.
You are welcome to share the contents of this newsletter online or in print. You can also remix and tweak anything here as you wish, as long as you share your creations on the same terms. Please credit MoebiusNoodles.com
More formally, we distribute all Moebius Noodles content under the Creative Commons Attribution-NonCommercial-ShareAlike license: CC BY-NC-SA
Talk to you again on January 30th!
Moby Snoodles, aka Dr. Maria Droujkova
Yelena recently reviewed the book “1+1=5” and shared the game of “I spy” she plays with her son.
The book inspires kids (and adults) to see everyday objects as sets, or collections of other objects. For example, a triangle can be viewed as a set of 3 sides while a rectangle is a set of 4 sides. An octopus is an example of a set of 8 (arms) while a starfish hides a set of 5 (arms) in plain sight. If one set has 8 elements and another set has 5 elements, then when added, the two sets have 13 elements total. Hooray!
I thought it could be fun to invite readers of this blog to play a round of the game. Here is the big question I am contemplating: “How can we make our descriptions of games we design so interactive that they become, literally, playable games?”
Add your own example! Of course, this is the ocean, for our Moby Snoodles.
This is what people added so far! It takes about five minutes for your answer to appear here. Wait and then reload the page to see!
Learning math through the arts… Moby Snoodles approves! So I was happy to review two books from Marcia Daft’s Moving Through Math project. They are read-aloud books for kids under five and their grown-ups. Both books are illustrated in a distinctive, memorable manner that reminded me of early Japanese watercolors. Of math education aspects, I found notes to parents to be most distinctive and memorable. After a strong book, you can graduate from “What?” (what entities and actions were in the book) – to “So what?” (your new understanding of the world).
What? Use iconic symbols, such as clapping hands or shaking maracas, to form pattern units, such as “clap, clap, shake.” Then repeat the unit to form the pattern. Perform each movement as you get to that symbol in the sequence.
So what? Unitizing is the foundation of multiplicative and proportional reasoning. For example, 5*3 can mean a unit of five repeated three times, or a unit of three repeated five times. Kids need to work and play with units a lot, such as repeating parts of songs and dances. A kid who thinks of any unit as a single building block is well on the way to the idea of variables.
Thumbs up!
Building on it

What? A traditional counting book, for numbers from one to ten. Children count by making whole-body movements, such as three giant puddle jumps, seven high reaches to the clouds, or eight jiggles down as you wiggle to the ground.
So what? Fine motor skills use some of the same parts of the brain as mathematics. That’s why activities that require fine motor skills, such as playing musical instruments, crocheting and origami, develop “the math brain.” But you don’t want to overwhelm and overload this math brain. Challenging fine motor skills, on top of challenging new math ideas – that can be too much for one activity! That’s why using gross motor movements helps to introduce new math ideas. Whenever I work with kids, I design whole-body methods for introducing each topic, from equations to infinity. This way, the math brain can devote itself to math, without having to coordinate the fine motor movements too.
Thumbs up!
Building on it
Reviewed by Maria Droujkova