--- product_id: 8209271 title: "The Adventures of Penrose the Mathematical Cat" price: "¥1067" currency: JPY in_stock: false reviews_count: 13 url: https://www.desertcart.jp/products/8209271-the-adventures-of-penrose-the-mathematical-cat store_origin: JP region: Japan --- # The Adventures of Penrose the Mathematical Cat **Price:** ¥1067 **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** The Adventures of Penrose the Mathematical Cat - **How much does it cost?** ¥1067 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/8209271-the-adventures-of-penrose-the-mathematical-cat) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Penrose, a cat with a knack for math, takes children on an adventurous tour of mathematical concepts from fractals to infinity. Review: Reading w my sons - I have currently a 4th Grader and a 2nd grader, and my 2nd grader is very bright (I'll try not to brag, but I'm partial) and during lockdown is getting less work to do for school than his big brother. When my older son is working on something and his little brother wants to play, I sit my 2nd grader down and have him read a chapter of _Penrose_. While I should qualify that my younger son reads a little higher than his grade level, the stories are engaging in the way they're written, use pretty simple vocabulary, and are structured very much from a "cat-like" perspective that speaks to the animal lover in my son, so they spark the imagination in a clever way. We just read about the Fibonacci Rabbit, and both my boys (younger one told his big brother about the chapter) were soon wandering around the house trying to do the mental arithmetic to get the next number in the sequence. I actually bought this copy of _Penrose_ to donate to my kids' school, because I think lots of kids would enjoy these stories, I wish he'd been around when I was a kid, might have eased my math anxiety! Review: Theoni Pappas is the Best General Math Writer - Excellent book by one of the best general math writers. I have all Thoni Pappas's books and calendars. Big fan of all her published materials. Too bad she retired a few years back. I really enjoyed her Mathematical Calendars as well. She did publish quite a bit over the years, so she has left a lot of great "Math Stuff" (another title of one of her books). ## Features - Ex-library paperback ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #420,696 in Books ( See Top 100 in Books ) #404 in Math Games #1,509 in Children's Cat Books (Books) #1,598 in Children's Math Books (Books) | | Customer Reviews | 4.5 out of 5 stars 162 Reviews | ## Images ![The Adventures of Penrose the Mathematical Cat - Image 1](https://m.media-amazon.com/images/I/61hwocp6AxL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Reading w my sons *by A***R on March 26, 2021* I have currently a 4th Grader and a 2nd grader, and my 2nd grader is very bright (I'll try not to brag, but I'm partial) and during lockdown is getting less work to do for school than his big brother. When my older son is working on something and his little brother wants to play, I sit my 2nd grader down and have him read a chapter of _Penrose_. While I should qualify that my younger son reads a little higher than his grade level, the stories are engaging in the way they're written, use pretty simple vocabulary, and are structured very much from a "cat-like" perspective that speaks to the animal lover in my son, so they spark the imagination in a clever way. We just read about the Fibonacci Rabbit, and both my boys (younger one told his big brother about the chapter) were soon wandering around the house trying to do the mental arithmetic to get the next number in the sequence. I actually bought this copy of _Penrose_ to donate to my kids' school, because I think lots of kids would enjoy these stories, I wish he'd been around when I was a kid, might have eased my math anxiety! ### ⭐⭐⭐⭐⭐ Theoni Pappas is the Best General Math Writer *by M***E on October 5, 2025* Excellent book by one of the best general math writers. I have all Thoni Pappas's books and calendars. Big fan of all her published materials. Too bad she retired a few years back. I really enjoyed her Mathematical Calendars as well. She did publish quite a bit over the years, so she has left a lot of great "Math Stuff" (another title of one of her books). ### ⭐⭐⭐⭐⭐ Exciting and fun *by K***M on October 30, 2010* I bought this book for my six year old who adores maths - especially doing problems in her spare time. We read a chapter whenever she is in a maths mood and try the problems together. Her cat often lies on her work and she relates to Penrose. The stories are short and include plenty of conversation so make them suitable even for bedtime reading. This is not a book to read from cover to cover over a week but one to be dibbled in to when the mood takes. The chapters can be read in almost any order. If you have a maths hungry child who wants some extension ideas away from the dull number crunching of school, then this is a perfect book. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/8209271-the-adventures-of-penrose-the-mathematical-cat](https://www.desertcart.jp/products/8209271-the-adventures-of-penrose-the-mathematical-cat) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-05*