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The Cinderella Theorem

(The Lily Sparrow Chronicles )

4.16  ·  Rating details ·  70 ratings  ·  33 reviews
Librarian's Note: Alternate-cover edition for ASIN B00IY03L4U

Fairy tales are naturally non-mathematical. That is a fact, and fifteen-year-old Lily Sparrow loves factual, mathematical logic. So when her mother confesses that Lily’s deceased father is (a) not dead, (b) coming to dinner, and (c) the ruler of a fairy tale kingdom accessible through the upstairs bathtub, Lily c
Kindle Edition, 369 pages
Published May 2016 by Amazon Digital Services (first published March 10th 2014)
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Average rating 4.16  · 
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Using facts + logic = Lily Sparrow’s life.

Mathematics = Lily Sparrow’s favourite subject + her idea of fun.

This story = highly original!

Ok, so enough of the equations for a while at least . . . but you hopefully are getting the idea that this is a decidedly different story, with Lily Sparrow as the super logical, mathematics loving main character. She’s a fifteen year old who has been brought up to believe her father is dead but then learns that he’s actually the king of a fairy tale kingdom, wi
I love how original this story was! Lily Sparrow is 15 years old and absolutely loves math. Her life is turned upside down when her mother reveals some things that are not compatible with her orderly, mathematical life. She's never bothered to learn about fairy tales and now her life is full of them so she needs to learn them quickly. She tries hard to be rational and logical and return things to "normal." She thinks she has things figured out but makes a bigger mess of things and needs to fix i ...more
Kimber Wheaton
Dec 25, 2014 rated it liked it  ·  review of another edition
Shelves: ya
I received this book from the author in exchange for an honest review.

The Cinderella Theorem is a cute YA fantasy about a logic, math-oriented girl who learns her father is the king of a fairy tale kingdom. Though it's billed as a YA novel, I thought it read more like middle-grade and would appeal to younger YA readers. Warning: if you have a math aversion, you might want to avoid this book. Math is life to young Lily, and it can be found on every page.

I can't imagine what it would be like to be
J.M. Cagle
Apr 26, 2014 rated it it was amazing  ·  review of another edition
It is a wonderful read. I like the story very much. I've always enjoyed reading fairy tales so I was really pleased to read about my favorite characters like Cinderella being part of another story and I like castles, balls and princes. I've always wanted reading story about girls living normal lives and then later on they'll find out that they are really princesses. I guess it is because I am still secretly hoping that I am a princess too from another land and my people are actually looking for ...more
First of all I want to thank the author for sending me a copy in exchange for an honest review. So here we go!

I love fairytales who doesn’t? But this isn’t like any other fairytale. Although I realy did like the ending of this book. I’m not going to tell you anything about that. You guys are going to have to find out for yourself. I hate it when someone tells you what is going to happen before you can find out yourself. So that’s why I’m not saying anything about the ending. But it was awesome ;
Kendra Ardnek
Math + Fairy Tales + a very distracted authorly mother = a book I thoroughly enjoyed. Romance was minimal but there were hints. Villains were sufficiently greasy. Plenty of humor and brilliant plot twists to keep me laughing and guessing.

I need book 2!
Cute Story

This is a cute story for any young girl who loves fairy tales, it's a fresh perspective and one that is humorous.
Raquel Evans
Maybe I'm being too harsh in DNFing now, because this book had a lot of fun promise, with the very math oriented main character. But... if a parent needs to be away from a child for years, whether the reason is magical or otherwise, there's NO reason to lie and tell the child that parent is dead! And then, having lied for no reason, why would you expect that child to just immediately accept that you've lied for years and life is totally different from what they thought, and be cool with it all? ...more
Alicia Huxtable
A great fairytale

Really enjoyed this story, was a different perspective on fairytales and the Happily Ever After endings. If you love fairytales, I recommend you read this book
Meyan Rose Malabanan
This Ebook was sent to me for free in excange of an honest review. My opinions are my own and have not been influenced by anyone or anything.

This was a book I saw on YA Bound Book Tours that was open for review but at that time, I had a totally different idea of what it was about even after I read the synopsis of the book. So I requested it, and as soon as I was accepted and got the book, I read it and boy was I surprised.

What I liked

The world building was really unique and interesting. Now at f
Aug 22, 2014 rated it it was amazing  ·  review of another edition
Ravan has created an elaborate fairy tale world unlike any I've read about before. The Cinderella Theorem is not a retelling of A fairy tale, but a retelling of ALL fairy tales.

Many teenage girls would be thrilled to discover that they're actually a princess of an entire kingdom (a world, actually, but kings and queens and princesses go with kingdoms, so that's the word we'll use). Imagine having tea with Cinderella, and then receiving a package personally prepared for you by Prince Charming. O
**You can see this full review and more at Book Briefs:** 

The Cinderella Theorem overall was a really great read. I had a few small issues with the book early, but they were minor things and I am so glad that I didn't let them get in the way of enjoying the story, because this was a book that just kept getting better and better. I loved the concept of the story and the main character, Lily was a delight. Lily loves math, she likes logic and she likes being able to get the s
Ren nerdychampagne
I received a copy of this book in exchange for an honest review

There is a lot more Math in everything than we acknowledge and this book is much more fun and exciting than Math.

When I first saw the title, the first thing that came to my mind was Math, because well, I went through Geometry at school and theorems, and postulates, and proving and I had quite a relationship. (I broke up with them though.) The second thing that came to my mind was Cinderella and oh look, another retelling. The third
Oct 26, 2014 rated it it was amazing  ·  review of another edition
Hilarious! I loved this book! I knew just by reading the synopsis that I had to read it. I was a little nervous about reading about a math lover (personally I hate math), but not only did Kristee Ravan help me understand math (there wasn’t an equation that I didn’t understand) but she also made it so that I actually enjoyed the math in this book (and that’s saying a lot because, me liking math is not even mathematically possible). I loved all the characters (except for Levi, but that goes withou ...more
Arlene Mullen
Aug 22, 2014 rated it really liked it  ·  review of another edition
On Lily's 15th birthday she finds out her life has been a lie. She starts the day being told she can not take more than one math class. For Lily that is upsetting because she really loves math and uses it in all parts of her life. She comes home to find out her dad isn't really dead but the king of a fairy tale land. Her parents do not seem to understand why she is so upset and confused. On top of all of the strangeness she is told she is a princess and will have to go and fulfill her duties. Sh ...more
May 12, 2014 rated it really liked it  ·  review of another edition
Shelves: fairytales-or-so
At first I didn't like it that much. Lily's "math talk" was very strange and unusual at the beginning. With time I got used to it and actually liked her way of talking and thinking, although I am definitely not a math fan. The story itself was interesting, I especially liked the idea of the HEA (an agency which monitors people's happiness) and how Lily tries to bring "normal" to the fairy tale world (which of course doesn't go as planned). A math fanatic in a fairy tale world, who would have tho ...more
Jul 14, 2014 rated it it was amazing  ·  review of another edition
I thought I wouldn't like it because I don't like math, but this book was AMAZING!!! Can't wait for the next book!! ...more
it was very different from other fairy tales... it was mashup of all the fairy tales and pointrd out a very common theme in all of them.... the concept of "Happily Ever After"... which is never true in real world.. "all love stories have to come to an end...death is inevitable.." ...more
Shannon McDermott
Lily Sparrow is an atypical teenager: a teenager who thrives on mathematics, who wants everything clear and logical, who thinks all life should work out to a balanced equation. But when she discovers on her fifteenth birthday that her parents have been leading a double-life in a fairytale world, and now they want her to join them, she has a typical teenager response: She wants her normality back.

That she never was normal may occur to readers who watch her try to process all of life through mathe
Katie W
I'm not into math, but I love fairy tales. I passed my math classes, but it's not my favorite subject, and I wasn't sure how a story about fairy tales could possibly tie into math. But it worked! I thought it was very creative and the story was even written in a math book-type of format--little side notes and footnotes. It was interesting to see the way a logical girl could come to accept a fantasy world--almost like right brain meets left brain.

Lily Sparrow spends the first fifteen years of her
Tween 2 Teen Book Reviews
Characters: Lily, her mother, her father (the Tub Man),

I really enjoyed these characters. They are all so funny. Especially Lily. She thinks in mathematical terms, which makes for a VERY funny story. 1 funny girl + 1 funny family = loads of fun!

First Impressions:

I got this book in the mail back in July. I expected it to be okay, but it far surpassed my expectations. I picked it up and couldn't stop! I was laughing out loud the entire time!

Writing: 5/5 The writing is very original. I love the ma
Dec 15, 2014 rated it really liked it  ·  review of another edition
The Cinderella Theorem (The Lily Sparrow Chronicles Book 1) by Kristee Ravan


This is a entertaining fairy tale that is different. Math loving Lily finds out that her dead father she never knew is really alive and lives in a different world. You get there through the door in her bathtub.

It is fun with math and fairy tale stories. I like the characters. I liked the topics of how important happily ever after is. That things might make a person happy for a moment. The math is a little bit muc
Tanya Thurling
I originally thought this book was a YA book but upon reading it I think it's more suited to a younger audience. I have a 9 year old daughter who I think would enjoy it very much. I've no doubt she will read it now I've finished.
I must admit the maths aspect of the story was slightly off putting but this is coming from a person who dislikes maths very much. But you do get used to it as the story goes on.
Overall a very lovely story, I mean who wouldn't want a portal to a magical kingdom in their
I decided to read this book because what girl doesn't like reading about a happily ever after sort of story? This was a pretty quick read and geared towards younger audiences but still cute and different enough for adults to like it too. At first Princess Lily's math talk was a bit much for me to get through, I really, really hate math as it is so confusing to me however I decided to stick with it and the math ended up being a cute quirk of the character that I kind of liked. I thought the chara ...more
Cynthia Joyce
May 16, 2014 rated it really liked it  ·  review of another edition
This review has been hidden because it contains spoilers. To view it, click here.
Apr 10, 2014 rated it really liked it  ·  review of another edition
It took me awhile to get into this one but by the end I was really enjoying it. I loved the creativity and the concept of fairy tale characters all trying to live happily ever after in another land. I also liked the inclusion of math references. My only complaint would be Lily read a little too young for me. Her thoughts and words feel more like a 9 or 10 year old than a young teenager. Having said that, I think it makes a great book for girls in the 7-10 age range which wouldn't pick up on or m ...more
Nov 10, 2014 rated it really liked it  ·  review of another edition
Shelves: young-adult, e-book
Lily Sparrow believes her father is dead, but on her 14th birthday she finds out he's not. He is a king of a land where fairy tale characters live. Lily likes math and all this new information and experiences just don't equate.
Lily starts to train as a happyologist. Her partner is Calo and in the end they manage to save some important fairy tale characters from unhappiness.

I liked it. The combination of math with fairy tale was unique and interesting.
Sean Randall
"This makes absolute perfect sense. Why shouldn’t she have seen him? I mean, my goodness, the man rules a fairytale kingdom and travels through a bathtub. Why wouldn’t he have time to see his wife?"

This was fun, and clever mathematically as well. Not for the age range of YA I normally read, I think, aimed a little younger. But intelligent, neatly done and a grand homage to the fairy tale.
Jul 06, 2014 rated it it was amazing  ·  review of another edition
This is a great teenage story - totally teenage! I loved it (and I'm no teen)! I'm also not a math geek, but I found the math stuff fun. The story started a bit slow, but picked up quickly as Lily found "normal" being redefined from her precise mathematical equations of life. I'm looking forward to the next book. ...more
I started this months ago, but it took me a long time to finish simply because it just wasn't that interesting. The math talk is annoying, because I'm not a fan of math, and the name of the magical land?? Seriously needs to be changed. I hated that. It drove me nuts throughout the entire book. I like how original this book is, but it really needs some revising. ...more
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Addicted to YA: The Cinderella Theorem 1 9 Sep 03, 2014 08:21AM  
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Kristee Ravan lives in Oklahoma with her husband, daughter, and pet cat, Kasidy. She wanted to be many things as grew up including a general, an artist, and an architect. But she never bothered to say, “I want to be a writer when I grow up.” She was always writing stories and thought of herself as a writer anyway. She sent her first story to a publisher in the sixth grade. (It was rejected—in a ni ...more

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