SKU: 65085089665

Make Trigonometry

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Description

Make TrigonometryTrigonometry has 2000 year old roots in everyday useful endeavors, like finding the size of an object too big or far away to measure directly, or navigating from Point A to Point B. However, it is often taught very theoretically, with an emphasis on abstractions. Make: Trigonometry uses 3D printable models and readily available physical objects like wire and cardboard tubes to develop intuition about concepts in trigonometry and basic analytic

Trigonometry has 2000-year-old roots in everyday useful endeavors, like finding the size of an object too big or far away to measure directly, or navigating from Point A to Point B. However, it is often taught very theoretically, with an emphasis on abstractions. Make: Trigonometry uses 3D printable models and readily-available physical objects like wire and cardboard tubes to develop intuition about concepts in trigonometry and basic analytic geometry. Readers will imagine the thought process of the people who invented these mathematical concepts, and can try out "math experiments" to see for themselves how ingenious ancient navigators and surveyors really were.The analytic geometry part of the book links equations to many of these intuitive concepts, which we explore through in-depth explanations of manipulative models of conic sections. This book is aimed at high school students who might be in Algebra II or Pre-Calculus. It shows the geometrical and practical sides of these topics that otherwise can drown in their own algebra.Make: Trigonometry builds on the basics of the authors' earlier book, Make: Geometry, and is intended as a bridge from that book to their Make: Calculus book. The user can read this book and understand the concepts from the photographs of 3D printable models alone. However, since many models are puzzle-like, we encourage the reader to print the models on any consumer-grade filament based 3D printer. The models are available for download in a freely-available open source repository. They were created in the free program OpenSCAD, and can be 3D printed or modified the student in OpenSCAD to learn a little coding along the way.About the AuthorJoan Horvath is the co-founder of Nonscriptum, a consulting and training firm that teaches educators and scientists how to use maker tech. She is a recovering rocket scientist who spent 16 years at JPL and then another 20 as an entrepreneur. Joan is an alumna of MIT, and the co-author of Make: Geometry and Make: Calculus. She lives in Southern California.Rich Cameron is the co-founder of Nonscriptum, a consulting and training firm that teaches educators and scientists how to use maker tech. He is an open-source 3D printer hacker who designed the RepRap Wallace and Bukito 3D printers, and the co-author of Make: Geometry and Make: Calculus. He lives in Southern California.

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SKU: 65085089665

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4.1 ★★★★★
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Erica Ross
Port Orchard, US
★★★★★ 1
The most worthless item I've purchased
Color: Black
I bought this can opener February 13th I think and I used it 2 weeks ago and is now broken won't open up anything so my review for this is the worst piece of crap can opener I've ever purchased so now I guess I got to go back to the manual hand one the Old faithful!!!! Do not I mean do not purchase it
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Reviewed in the United States on April 2, 2026
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Jules
Lake Worth, US
★★★★★ 5
not better than manual……!!!!!
Do Not Buy This Product. this review is coming at 1 April 2026. This can opener was purchased in October 2025. My initial review was that it worked well and did the job. It was meant to do however, after a few uses, I noticed that the can opener continue to move around and around the can even after the can lid had been cut open. in January 2026 it began to make more and more rotations around the can and the lid was not cut loose. After a few more uses. It just rotated and did nothing else. I sent an email to the company. I contacted Amazon about it. I’ve done everything that I can possibly see to do but I get no positive results. Consequently, I have a six month old can opener. It does not work. worked well for the first 10 or 20 uses; then the cutting edge just wore out (3-4mos.), so now my money was wasted. No explanation no offer, too bad.
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Reviewed in the United States on October 18, 2025
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Kathryn b.
Lowell, US
★★★★★ 1
Don't waste money on this one
Ordered in January 2026. Worked good the first few times. Now it just rotates around and around the can but doesn't cut anything. I'm so disappointed because it failed shortly after my return window closed.
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Reviewed in the United States on May 5, 2026
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rosa arellano
Carnegie, US
★★★★★ 5
I have arthritis and it works really well and very easy to use it came fully charged that was nice.
Very nice ;-)
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Reviewed in the United States on June 7, 2026
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Tim P.
Louisville, US
★★★★★ 5
Easy to use! No more hand cranking.
If you like the ease of an electric can opener, but don’t have room to store it or don’t want to drag it out when you need to use it, this is for you. I like a handheld can opener, but would get so frustrated trying to use it and turn the handle. This can opener is amazing and so easy to use. Just attach to can and push a button. It starts turning on its own and when it is done it stops. You lift it up and the lid comes off cleanly. It is rechargeable so need to worry about batteries. It tucks away in a drawer nicely. I bought my mom one too. She has arthritis in her hands so thought this would be perfect for her.
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Reviewed in the United States on January 10, 2026

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