--- product_id: 34222620 title: "Keep Calm and Show Your Work Math Classroom 12\"x18\" US Made Poster" brand: "posterenvy" price: "¥3626" currency: JPY in_stock: true reviews_count: 8 url: https://www.desertcart.jp/products/34222620-keep-calm-and-show-your-work-math-classroom-12x18-us store_origin: JP region: Japan --- # 12x18 inch perfect classroom size Solar-powered eco-friendly print Proudly made in the USA Keep Calm and Show Your Work Math Classroom 12"x18" US Made Poster **Brand:** posterenvy **Price:** ¥3626 **Availability:** ✅ In Stock ## Summary > 🧮 Keep Calm, Show Your Work, and Elevate Your Space! ## Quick Answers - **What is this?** Keep Calm and Show Your Work Math Classroom 12"x18" US Made Poster by posterenvy - **How much does it cost?** ¥3626 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/34222620-keep-calm-and-show-your-work-math-classroom-12x18-us) ## Best For - posterenvy enthusiasts ## Why This Product - Trusted posterenvy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted Family Brand:** PosterEnvy’s 20+ years of quality and customer love behind every print - • **Durable Premium Paper:** Heavy-duty satin finish ensures years of vibrant, fade-resistant display - • **Perfect Classroom Fit:** Ideal 12x18 inch size for classrooms, study nooks, and homeschool spaces - • **Eco-Conscious Production:** Printed using 100% solar energy—style meets sustainability - • **Iconic Keep Calm Math Design:** Bold red typography with clever math doodles inspires focus and motivation ## Overview This 12x18 inch math-themed poster from PosterEnvy features a durable, satin-finished paper print with vivid red 'Keep Calm and Show Your Work' typography on a white grid background. Proudly made in the USA by a family-owned business with over 20 years of experience, it’s produced using solar energy for an eco-friendly touch. Perfect for classrooms, study areas, and math enthusiasts seeking motivational decor that lasts. ## Description This 12x18 inch poster is printed on premium, durable paper. Proudly Made in the USA by PosterEnvy. The perfect size for any room. PosterEnvy is a family owned business, delivering top-notch posters around the world for over 20 years. Our posters are designed to last — they won't fade or pucker for years of enjoyment. Every poster features crisp, vivid artwork. We are a solar powered company. This motivational math poster features the iconic 'Keep Calm' design with a clever math twist, displaying the phrase 'Keep Calm and Show Your Work' in bold red letters against a white grid background with scattered math problems and symbols. ## Features - Premium Print: This PosterEnvy 12x18 inch poster is printed on Durable, Heavy Duty Paper, Designed to last many years - Keep Calm and Show Your Work math theme - Proudly Made in the USA: PosterEnvy is a Family owned business, delivering top-notch posters around the world for over 20 years - perfect classroom math poster - Solar Powered Production: All our posters are designed and printed using solar energy, with crisp vivid artwork - educational math classroom decor - Keep Calm Design: Classic 'Keep Calm' parody adapted for math students with red typography and math problem doodles on grid background - Perfect Gift Idea: Ideal for math teachers, students, classrooms, study areas, homeschool spaces, and anyone who loves mathematics and problem solving ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B018OQ22XE | | Best Sellers Rank | #2,445,722 in Home & Kitchen (See Top 100 in Home & Kitchen) #85,054 in Posters & Prints | | Brand Name | PosterEnvy | | Color | red and white | | Customer Reviews | 4.5 4.5 out of 5 stars (258) 4.5 out of 5 stars | | Frame Material | Unframed | | Frame Type | Unframed | | Indoor Outdoor Usage | Indoor | | Item Dimensions L X W | 18"L x 12"W | | Item Shape | Rectangular | | Item Weight | 1 ounces | | Manufacturer | PosterEnvy | | Material | Paper | | Mounting Type | Wall Mount | | Number Of Items | 1 | | Orientation | Portrait | | Paint Type | Watercolor | | Paper Finish | Satin | | Pattern | Text-Based | | Product Style | Tube | | Room Type | Classroom | | Size | 18"L x 12"W | | Theme | Education | | Unit Count | 1 Count | | Upc | 799637284913 785525149112 | | Wall Art Form | Poster | ## Images ![Keep Calm and Show Your Work Math Classroom 12"x18" US Made Poster - Image 1](https://m.media-amazon.com/images/I/61IU+64c8sL.jpg) ![Keep Calm and Show Your Work Math Classroom 12"x18" US Made Poster - Image 2](https://m.media-amazon.com/images/I/71662gGKJ0L.jpg) ![Keep Calm and Show Your Work Math Classroom 12"x18" US Made Poster - Image 3](https://m.media-amazon.com/images/I/711opnHrMJL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent, quality, copy, facsimile, or whatever *by on Reviewed in the United States August 4, 2021* And, to me and also me, as a lifelong aficionado, of sorts, of old school, archaic, sayings, proverbs, musings...this print came to me in a little, rolled, package that had fir precisely inside of my little, tiny, tight, apartment mailbox!!!!!!!!! ### ⭐⭐⭐⭐⭐ Perfect for the classroom *by on Reviewed in the United States December 31, 2021* Actually did frame this in a lightweight poster frame. Looks great in the classroom. ### ⭐⭐⭐⭐⭐ Very fun and helpful! *by on Reviewed in the United States July 1, 2018* Love it because as a middle school teacher, the kids often ask if they have to show their work. A fun way for me to just point! --- ## 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/34222620-keep-calm-and-show-your-work-math-classroom-12x18-us](https://www.desertcart.jp/products/34222620-keep-calm-and-show-your-work-math-classroom-12x18-us) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-26*