Review of Monkey Time, by Michael Hall

Animal Characters, Mathematical, Picture Book Review, Starred Review 0

Monkey Time

by Michael Hall

Greenwillow Books (HarperCollins), 2019. 48 pages.
Starred Review
Review written March 9, 2019, from a library book

Here’s what I like about this picture book: You can use it in multiple ways.

On the highest level, you can use it to teach children to tell time. There are “minutes” lined up around the tree like a clock. Diagrams in the back show what it looks like for all the multiples of 10 minutes up to 60. Twelve branches on the tree are positioned like the numbers on an analog clock.

There are also some rain forest animals pictured. They are named at the back.

You can also use this book to practice counting – all the way to 60. Or to count by tens.

But I’ve got a Mother Goose Storytime for babies on Pi Day this year – and I think I’m going to use this book on the very simplest level – as words that are fun to say. It will introduce them to the idea of a clock while I’m at it.

Here’s how the book begins (over several pages):

Psst! Wake up, Monkey!
It’s time to play.

Wheee! I bet you can’t
catch a minute, Monkey.

Chase me over.
Chase me down.
Chase me all the way around.
Faster, Monkey, faster.

Hop! Pop!
Ha-ha. You missed me.

Little round “minutes” keep running around the tree, and Monkey keeps trying to catch them. The tree fills up when sixty minutes have come out. (Don’t worry, the text doesn’t closely follow all sixty minutes.)

This clever little picture book reminds me of Chicka Chicka Boom Boom by personifying a concept and making a story with them that’s fun to say.

A simple and fun way to introduce the concept of telling time.

michaelhallstudio.com
harpercollinschildrens.com

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Source: This review is based on a library book from Fairfax County Public Library.

Disclaimer: I am a professional librarian, but I maintain my website and blogs on my own time. The views expressed are solely my own, and in no way represent the official views of my employer or of any committee or group of which I am part.

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Review of The Cookie Fiasco, by Dan Santat

Animal Characters, Easy Readers, Mathematical, Picture Book Review, Starred Review 0

The Cookie Fiasco

by Dan Santat

Hyperion Books for Children, 2016. 60 pages.
Starred Review

First, let me talk about the new series this book introduces: Mo Willems’ Elephant & Piggie Like Reading. There are four pages at the front and four pages at the back where our beloved Gerald and Piggie talk about reading the book. The title page has a picture of Gerald holding the very book, ready to open it up and read it.

Now I’m not crazy about this frame – Just a little bit of Elephant and Piggie is not enough! Fortunately, they did choose excellent authors for the books-within-a-book, so this wasn’t a way to pass off any old thing and sell it with the Mo Willems brand. The Pigeon is even hiding on the back end papers, just as he does in the regular Elephant and Piggie books.

But what I love about The Cookie Fiasco are the mathematical implications! This book reminds me of the classic The Doorbell Rang, by Pat Hutchens. Like that book, it’s a simple story that small children can enjoy – but you can pull it out later when they’re learning about fractions and make multiple applications and elucidations.

The story is simple: Hippo, Croc, and two Squirrels have three cookies. Four animals, three cookies.

They discuss how to share the cookies, but nothing seems fair. While they are discussing the options, Hippo nervously starts breaking the cookies in half.

Then they have six cookie pieces, but still four friends. It’s still not fair. While they continue to discuss, Hippo continues to break the pieces. After a while they have twelve pieces, and realize that each one can have three pieces. Problem solved! Equal cookies for all!

There is a grand page of munching cookies – and then a cow shows up with three glasses of milk. Uh-oh!

The only thing wrong with this book is the one Gerald points out in the frame at the end – It may make you hungry for cookies.

It’s a simple, silly story. You don’t need to talk about the math behind it at all. But someday, when a child is learning to divide three by four, you can use this as a lovely illustration. And similar fractions. There’s even room for talking about common denominators. I’d love for this book to get a mention in the next set of Mathical Awards, I liked it so much.

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pigeonpresents.com
www.hyperionbooksforchildren.com

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Source: This review is based on a library book from Fairfax County Public Library.

Disclaimer: I am a professional librarian, but I maintain my website and blogs on my own time. The views expressed are solely my own, and in no way represent the official views of my employer or of any committee or group of which I am part.

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Review of Goodnight, Numbers, by Danica McKellar

Bedtime stories, Children's Nonfiction Review, Contemporary, Mathematical, Picture Book Review, Starred Review 0

Goodnight, Numbers

by Danica McKellar
illustrated by Alicia Padrón

Crown Books for Young Readers, 2017. 28 pages.
Starred Review

Yes! This is the very best sort of counting book – with multiple things to count on each page.

For example, on the page for Four, the text says,

4
FOUR
Goodnight, four paws.
Goodnight, kitty cat.
Goodnight, four froggies
on the bathroom mat.

In the picture we do see four paws on the kitty cat, but also four stripes on its tail. We see four froggies on the bathroom mat, and we also see four rubber duckies in the room.

There are four shampoo bottles on the side of the tub, four toy turtles, four rolled-up towels, four stripes on the towel the dad is holding, four dots on the stool, and four bubbles in a framed picture (with framed spaces for ten things – this is consistent on each page).

Mind you, the rhyming text is simply nice, not stellar. But it’s not glaringly bad, either, which is an accomplishment with rhyming text!

The pictures are soft and sweet – and so many things to count! Another example on the Five page is the Mom has a necklace with five daisies, and each daisy has five petals.

The back of the book has a note to the parent/grandparent/caregiver reading the book. It points out the educational value, in case they missed it, and gives more ideas for bringing numbers into children’s lives.

This book would pair well with the bedtimemath.org website and app. They recommend doing math problems with your child at bedtime, as well as bedtime stories. This book is both!

This is a great way to talk about numbers and counting in a cozy and friendly way. It’s never too early to show your children that math is all around them.

McKellarMath.com
randomhousekids.com

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Source: This review is based on a library book from Fairfax County Public Library.

Disclaimer: I am a professional librarian, but I maintain my website and blogs on my own time. The views expressed are solely my own, and in no way represent the official views of my employer or of any committee or group of which I am part.

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Review of Sam Sorts, by Marthe Jocelyn

Contemporary, Mathematical, Picture Book Review, Starred Review 0

Sam Sorts

(One Hundred Favorite Things)

by Marthe Jocelyn

Tundra Books, 2017. 32 pages.
Starred Review

Here’s a wonderful picture book full of early math concepts that can be used in many different ways. It’s also good as a story (Well, a little bit – a story about a boy tidying up), and for those children who enjoy super-detailed illustrations (like I Spy and Where’s Waldo).

Mainly, it’s about Sam’s quirky collection of one hundred favorite things and the many different ways they can be sorted and counted.

After a page declaring that his things are in a heap and need to be tidied up, Sam starts in:

First he finds Obo the robot, one of a kind. Then two snarling dinosaurs, three little boxes, and four fake foods. How many things is that?

Sam gathers many things in various groupings. I like the page that shows a Venn diagram with three circles made of string.

Spider Rock joins the other rocks. Sam’s favorite rock is the round one. He looks for more round things. Two of the buttons are exactly the same. What else comes in twos?

The Venn diagram shows rocks in the first set, then round things, then things that come in twos. There are things in both intersections. There are things that don’t fit any of those categories on the outsides.

Things continue to be sorted in various ways.

Another way Sam makes a pair is by finding a rhyme.

Some things match because they have stripes. A few have dots or holes. Only one has checks. The snake is striped AND green . . .

On another page, the things are sorted onto a rainbow by color. Then many other categories are shown. (“Soft,” “Noisy,” “Pointy,” . . .)

Sam gets overly exuberant after putting out all his “guys.” “Look out, guys . . . The animals are coming!”

Once things are in a heap again, Sam decides to tidy up again. The next page has all the things laid out, separated by a striped background. The text asks, “How many categories? How many things?” There are ten categories with ten things each, so here is a great exercise in counting to one hundred. (One little problem with that page is that for at least a couple categories, it’s hard to figure out what the category might be.)

But if nothing else, this introduces the concept of sorting and sets and looking at things in different ways. This is a wonderful early math activity, and I love the playful approach.

www.penguinrandomhouse.ca

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Source: This review is based on a library book from Fairfax County Public Library.

Disclaimer: I am a professional librarian, but I maintain my website and blogs on my own time. The views expressed are solely my own, and in no way represent the official views of my employer or of any committee or group of which I am part.

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Review of Which Is Round? Which Is Bigger? by Mineko Mamada

Children's Nonfiction Review, Contemporary, Mathematical, Picture Book Review, Science, Starred Review 0

Which Is Round?
Which Is Bigger?

by Mineko Mamada

Kids Can Press, 2013. First published in Japan in 2010. 28 pages.
Starred Review

I thought this was going to be a ho-hum concept book. But it surprised me.

The first spread asks the question, “Which one is round?” We see an apple and an armadillo. The answer seems obvious.

But when we turn the page, the apple has been eaten down to the core, and the armadillo has curled into a circle. Now the page asks, “Which one is round? What do you think?”

We get similar questions – and shifts – with questions about which one is bigger, longer, faster, higher, and red (an apple versus a watermelon – outside and inside).

It’s a simple book, and very short. But I love the question after each shift, “What do you think?” What a wonderful opening for interesting conversations with your children! And what a lovely way to get them to think critically and look again.

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Source: This review is based on a library book from Fairfax County Public Library.

Disclaimer: I am a professional librarian, but I maintain my website and blogs on my own time. The views expressed are solely my own, and in no way represent the official views of my employer or of any committee or group of which I am part.

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Review of Paths and Portals, by Gene Luen Yang and Mike Holmes

Children's Fiction Review, Graphic Novel, Mathematical, Science Fiction 0

Paths and Portals

Secret Coders, Book 2

by Gene Luen Yang & Mike Holmes

First Second, 2016. 92 pages.
Review written in 2016.

This is very much part two of a longer story – not really a stand-alone book at all. But I like what they’re doing here.

This graphic novel is a vehicle for teaching readers how to code using the LOGO programming language – but the story is fun and engaging.

There are puzzles along the way – coding challenges are presented and the reader’s given a chance to figure out the solution before each step is explained. In fact, like the first book, this one ends with a coding challenge. And this one begins with the solution to the problem posed at the end of book one.

The story will keep kids’ interest. There are even villains introduced in this book – a sinister principal and a whole rugby team doing his bidding to get new uniforms. So now their coding activities with the old janitor, Mr. Bee, who used to be a professor, are threatened. There are lots of secret rooms and something sinister going on.

With this second book, I’m impressed where the authors take things. They show how to generate random numbers and then make beautiful patterns with code. The progression is straightforward – but so interesting. The story makes it more than just a coding textbook, and the fact that it’s a graphic novel makes the instructions and examples much easier to understand.

secret-coders.com
firstsecondbooks.com

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Source: This review is based on a library book from Fairfax County Public Library.

Disclaimer: I am a professional librarian, but I maintain my website and blogs on my own time. The views expressed are solely my own, and in no way represent the official views of my employer or of any committee or group of which I am part.

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Review of A Hundred Billion Trillion Stars, by Seth Fishman

Children's Nonfiction Review, Mathematical, Science, Starred Review 0

A Hundred Billion Trillion Stars

by Seth Fishman
illustrated by Isabel Greenberg

Greenwillow Books, 2017. 36 pages.
Starred Review

Here’s a picture book for kids about the enormous numbers in our world.

For example, there are about seven billion five hundred million (7,500,000,000) people on earth – and they weigh about the same amount as the approximately ten quadrillion (10,000,000,000,000,000) ants on earth!

There are about three hundred seventy billion billion gallons of water on earth, and about three trillion trees. In the course of an average lifetime, you might eat up to 70 pounds of bugs.

That’s the kind of statistics this book is full of. There’s a nice touch that when a big number is given in numeral form, you’ll also see it written out in words. (Our minds glaze over all those zeros.)

One truly mind-boggling part is toward the back, where it says:

By the time you’re done reading this book, almost every single number in it will have changed, getting bigger or smaller right before your eyes.

Even the number of stars.

At the very back is an Author’s Note with a nice explanation of how we can figure out these numbers without trying to count to a hundred billion trillion, which is impossible. There’s a nice explanation of estimates:

These numbers are sort-of-definitely-ALMOST true. Let me explain. Some of these numbers change so quickly that to give you an exact number would be impossible. For instance, we don’t really know if the full weight of all the ants on earth equals the full weight of humans. But we can estimate that there are 3.5 million ants per acre in the Amazon rain forest. With some serious snooping, fact-checking, and extrapolating we can estimate a very large number of ants on earth, one that means the combined weight of all these ants should be near the combined weight of all humans, or maybe dogs, or mice. And yes, you might eat some of those ants. you might eat many different types of bugs – though of course I don’t know exactly how many, or whether you’ll do it on purpose. Maybe a fly will zip into your mouth as you bike, or you’ll swallow a spider while you snore at night. But it will be near 70 pounds’ worth over the course of your life (about the total weight of a golden retriever).

Estimates can help you imagine sizes and compare one big fact to another. That is why this book is called A Hundred Billion Trillion Stars, and not One Hundred Nineteen Sextillion Fifty-Seven Quintillion Seven Hundred Thirty-Seven Quadrillion One Hundred Eighty-Three Trillion Four Hundred Sixty-Two Billion Three Hundred Seven Million Four Hundred Ninety-One Thousand Six Hundred Nine Stars. We can get very near the correct number on many things, near enough for us to understand how big they are – especially in comparison to the world around us.

Here’s a lovely way to play with the concept of great big numbers all around us.

sethasfishman.com
isabelnecessary.com
harpercollinschildrens.com

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Source: This review is based on a library book from Fairfax County Public Library.

Disclaimer: I am a professional librarian, but I maintain my website and blogs on my own time. The views expressed are solely my own, and in no way represent the official views of my employer or of any committee or group of which I am part.

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Review of Which One Doesn’t Belong, by Christopher Danielson

Children's Nonfiction Review, Mathematical, Starred Review 0

Which One Doesn’t Belong?

A Shapes Book

by Christopher Danielson

Stenhouse Publishers, 2016. 36 pages.
Starred Review
Mathical Award Winner

I’m reading and reviewing this book during my Newbery year even though it was written in 2016 and isn’t eligible – because it makes my mathematical heart sing!

The idea comes from the old Sesame Street song – “One of these things is not like the other” – except on these pages, all four shapes can be the correct answer!

The book starts with an example and explains why you might have chosen any of the four shapes. (There’s also an emphasis that there’s not just one reason to choose any given shape.)

Here’s the explanation that follows the first example:

On every page of this book, you can choose any shape and say that it doesn’t belong.

The important thing is to have a reason why.

How is your shape different from the others?

What if you had picked a different shape?

While the question is the same on every page, some pages are more challenging than others.

You may need to put the book down to think and come back later.

So when you’re ready, turn the page and decide which one doesn’t belong.

It’s interesting to me that no answers are given – not even on the website. I didn’t figure out a good answer for every shape – I guess I need to keep thinking!

At the back of the book, the author says this:

I made this book to spark conversations, thinking, and wonder.

I hope you will see similarities and differences in unexpected places.

I hope this is a book you will leave open, think about, and return to. I hope you will share it with others.

I hope you will send me your own sets of shapes to challenge me to say which one doesn’t belong.

Find me at talkingmathwithyourkids.com

Sparking conversations! Encouraging critical thinking! Wow!

As a former math teacher, one of my favorite things about this book is the way it teaches there is not only one right answer. And that there might be different reasons for any given answer.

As far as I’m concerned, the Mathical Book Prize was well-deserved. I’m not sure when I’ve been more excited about a math book for kids.

On the website, a parent talks about discussing the book with a four-year-old – and yet the puzzles aren’t boring for an adult with a master’s in math. How often can you say that about a book?

talkingmathwithyourkids.com
stenhouse.com

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Source: This review is based on a library book from Fairfax County Public Library.

Disclaimer: I am a professional librarian, but I maintain my website and blogs on my own time. The views expressed are solely my own, and in no way represent the official views of my employer or of any committee or group of which I am part.

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Outliers Blanket!

Mathematical 1

I did some more mathematical knitting for my new niece Kara!

For this blanket, I used the entrelac squares format I’d used in the prime factorization blankets, but the concept I’d used in the outliers scarves.

I took numbers from a normal distribution, using the generator at random.org.

Then I chose five colors in shades of pink, since we already knew Kara would be a girl.

For numbers in the middle of the curve (part of the bell), I used lighter colors. (z-scores of -0.5 to 0.5) For every half a z-score, I used a darker color. For the true outliers, numbers with a z-score bigger than 2 (or less than -2), I used the darkest color – but I added a sparkly silver thread.

This is to show that the outliers are what make life beautiful.

And aren’t we all outliers in some way or other?

I also distinguished between negative and positive numbers by using garter stitch for positive numbers and seed stitch for negative numbers.

It was a huge treat to try out the blanket with Kara. It wasn’t as big as I originally intended, but with random numbers I was able to stop when I decided it was done.

Kara’s big sister Zoe really enjoyed the blanket, too!

Review of How Much Does a Ladybug Weigh? by Alison Limentani

Children's Nonfiction Review, Mathematical, Science, Starred Review 0

How Much Does a Ladybug Weigh?

by Alison Limentani

Boxer Books, 2016. 28 pages.
Starred Review

The more I look at this book, the more I like it. Right now, I’m planning to use it for my next Toddler and Preschool Storytimes, and even bring it to Kindergarten and first grade classes for booktalking. The idea is simple, but it’s got so much depth.

Here is the text of the first several pages:

10 ants weigh the same as 1 ladybug.

9 ladybugs weigh the same as 1 grasshopper.

8 grasshoppers weigh the same as 1 stickleback fish.

7 stickleback fish weigh the same as 1 garden snail.

You get the idea! The book progresses, counting down, through starlings, gray squirrels, rabbits, and fox cubs to 1 swan. Then, of course, to finish off, we learn:

1 swan weighs the same as 362,880 ladybugs.

The illustrations are simple and clear. This whole book could almost be thought of as an infographic, except that the animals are not icons, but detailed illustrations.

I love that the animals chosen are not your typical animal-book animals. But most of them (except maybe the stickleback fish) are ones a child is quite likely to see in their own yard or neighborhood.

The back end papers list average weights of all the animals (in a colorful diagram) with the note, “Different animals of the same species can vary in weight, just as different people do. All the weights in this book are based on animals within the average healthy weight range.”

I love the way this is a counting book, a math book (about relative weight and even multiplication), a beginning reader, and a science book (about these different species).

It’s also a beautiful picture book. The note at the front says, “The illustrations were prepared using lino cuts and litho printing with digital color.” They are set against lovely solid color backgrounds, so the animals show up nice and clear.

I have a feeling that reading this book frequently with a child will get that child noticing small animals and insects in the neighborhood and thinking about weights and differences and good things like that.

A truly brilliant choice for early math and science thinking.

boxerbooks.com

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Source: This review is based on a library book from Fairfax County Public Library.

Disclaimer: I am a professional librarian, but I maintain my website and blogs on my own time. The views expressed are solely my own, and in no way represent the official views of my employer or of any committee or group of which I am part.

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