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The Cat in Numberland #2020

The Cat in Numberland At Mr and Mrs Hilbert s Hotel Infinity the resident cat is puzzled The hotel is fully booked the rooms are full of Numbers both Odds and Evens yet guests continue to arrive When Zero shows up there

  • Title: The Cat in Numberland
  • Author: Ivar Ekeland John O'Brien
  • ISBN: 9780812627442
  • Page: 500
  • Format: Hardcover
  • The Cat in Numberland By Ivar Ekeland John O'Brien, At Mr and Mrs Hilbert s Hotel Infinity, the resident cat is puzzled The hotel is fully booked the rooms are full of Numbers, both Odds and Evens yet guests continue to arrive When Zero shows up, there s a massive room switching, and he stays, even though Mr Hilbert insists he s not really a Number Then the Letters appear and everyone still has a room, even thoughAt Mr and Mrs Hilbert s Hotel Infinity, the resident cat is puzzled The hotel is fully booked the rooms are full of Numbers, both Odds and Evens yet guests continue to arrive When Zero shows up, there s a massive room switching, and he stays, even though Mr Hilbert insists he s not really a Number Then the Letters appear and everyone still has a room, even though no Numbers have left No matter how many guests arrive or depart, the hotel accommodates them all, and is always full But when the Fractions arrive, demanding rooms, real chaos threatens Can an ingenious solution be found to house them all Based on mathematician David Hilbert s famous paradox of the Grand Hotel, The Cat in Numberland offers a refreshingly clear explanation of infinity for readers of all ages John O Brien s imaginative line drawings further elucidate the complex concept, as well as simple functions like addition, subtraction, division, and multiplication.

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      Ivar Ekeland John O'Brien

    1 thought on “The Cat in Numberland

    1. I bought this book for my eight year old a math nerd in the making , but the entire family enjoyed it so much that I had to write a review Mr and Mrs Hilbert are owners of Hotel Infinity where every number integer has a room Of course, as a consequence, the hotel has an infinite number of rooms However, Zero shows up at their doorstep and wants to stay at the hotel How does one go about getting Zero his own room And what about the fractions who also make an appearance and would like to stay in t [...]

    2. Fascinating book about infinity The concept is mind boggling, and I found myself sympathizing with the cat since I couldn t fathom the enormity of it myself either But I loved how the author explains the idea and at least we get the general concept The black and white illustrations are simple, but entertaining and our girls thought it was funny that 1,234,566 makes an appearance in the story several times We enjoyed reading this book together.

    3. Interesting, kind of funny Like The Number Devil A Mathematical Adventure for younger kids I wonder if Mr and Mrs Hilbert miss their cat.

    4. Did a good job of explaining the Hilbert hotel concepts.Did less of a good job when talking about other things that were tossed in like the 4 games that the numbers could play adding, subtracting, multiplying, and dividing Mentioned that not any 2 numbers could play division, but didn t say anything about limits on subtraction Didn t change the division limits once fractions entered the picture.I did love the single variable algebra problems that were introduced when the letters came to play.

    5. I had checked out this Flatland for Infinity on a recommendation, but wasn t too sure about it The kids wouldn t let me put it down We normally do this sort of book a chapter at a time over a few days, but they insisted we read it through cover to cover in one sitting Bravo Mr Ekeland we ll be sure to look into your other works.

    6. Good early reader The story is humourous and the cat is great Introduces fractions, the idea of infinity and discusses additon, subtraction, multiplication and division Not great for students struggling in math as a supplement but entertaining I would reccomend for 4th and 5th graders and encourage a Hotel Infinity follow up activity Maybe have the kids play the games the numbers did role play math problems.

    7. This is a fantastic depiction of the proofs involving Hilbert s hotel I love the inclusion of both letters and numbers and also the defense of zero.I didn t particularly like the arithmetic games With only one of each number, it s not clear how the games are played 4 2 wouldn t be possible to play Also, 0 can be divided, even though 0 can t divide, and it would be very boring to play addition, subtraction, and multiplication with 0.The poor confused cat.

    8. I loved this short chapter book for kids 60 pages The cat stays in Hotel Infinity where all the numbers reside in their respective rooms But what happens when zero comes and needs a room What about when the letters need to stay the night And how on earth do they accomodate all of the fractions It s just a great story with a bonus of kids learning about math concepts Lovin it

    9. I read this to my 5.5 year old and it was a little above him in the math concept department but he saw the humor in some of the situations It is a discussion of infinity, odd even and other math concepts The cat that lives at the hotel with all the numbers is finally so baffled by the fact that the hotel is full but there is always room that he moves away.

    10. I borrowed this book from the library for my 2nd grader He read it cover to cover in one sitting The illustrations are whimsical The writing is direct, simple, and clever It makes the concept of infinity accessible and fun Loved it

    11. TRuman is into numbers lately, and we started reading this chapter book about a cat in numberland He is loving it, and we ar reading a chapter a night, or at least part of a chapter It is a great book for him, and I love how intrigued he is with numbers, and math.

    12. It s a cute picture book made to help explain infinity A cat lives in Hotel Infinity and is perplexed by how many different numbers and fractions can be added into the hotel, each with their own room The illustrations are very well done and do help explain.

    13. O picked up the concept of odd and even numbers, the idea of infinity and was intrigued by the concept of zero.

    14. one million two hundred thirty four thousand five hundred sixty sixgreat book for mathematicians number lovers son loves this book almost as much as he loves infinity.

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