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Description
Pluses and Minuses: How Math Solves Our ProblemsA guide to changing how you think about numbers and mathematics, from the prodigy changing the way the world thinks about math. We all know math is important: we live in the age of big data, our lives are increasingly governed by algorithms, and we're constantly faced with a barrage of statistics about everything from politics to our health. But what might be less obvious is how math factors into your daily life, and what memorizing all of those
A guide to changing how you think about numbers and mathematics, from the prodigy changing the way the world thinks about math. We all know math is important: we live in the age of big data, our lives are increasingly governed by algorithms, and we're constantly faced with a barrage of statistics about everything from politics to our health. But what might be less obvious is how math factors into your daily life, and what memorizing all of those formulae in school had to do with it. Math prodigy Stefan Buijsman is beginning to change that through his pioneering research into the way we learn math. Plusses and Minuses is based in the countless ways that math is engrained in our daily lives, and shows readers how math can actually be used to make problems easier to solve. Taking readers on a journey around the world to visit societies that have developed without the use of math, and back into history to learn how and why various disciples of mathematics were invented, Buijsman shows the vital importance of math, and how a better understanding of mathematics will give us a better understanding of the world as a whole. Stefan Buijsman has become one of the most sought-after experts in math education after he completed his PhD at age 20. In Plusses and Minuses, he puts his research into practice to help anyone gain a better grasp of mathematics than they have ever had.Binding Type: Paperback
Publisher: Penguin Group
Published: 08/25/2020
ISBN: 9780143134589
Pages: 208
Weight: 0.35lbs
Size: 7.90h x 5.30w x 0.60d
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4.1 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Finally a toy we can leave out!
Size: 10.5 inch Rubber Flex Tread, Size: 10.5 inch Rubber Flex Tread
There are very few toys that we can leave out for our 11 month old golden. Which is a shame because as a small puppy, we taught him to bring us a toy to initiate play instead of nipping. Ropes or stuffies never lasted more than a few minutes so they always had to be taken away. One time he brought us a benenbone to play tug. So I tried this as a last resort. Finally something we can keep out for him! It’s not completely indestructible. He has figured out how to pull bits of tread off. But he chewed hard on it for a solid 20 minutes and it’s still intact with the exception of a few small tread pieces. Can’t say that for 99% of the other dog toys on the market!
UPDATE: OK, so it's definitely not indestructible. After a few days of dedicated gnawing, he has almost chewed through the yellow ring so we can't leave him too unsupervised with it. I'm still going to leave it as 5 stars since it's the best tug toy that I have found so far and we have tried a lot! I may buy another one and just make sure I don't let him freely chew on it for any length of time.
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Reviewed in the United States on April 1, 2023
★★★★★ 3
Really wanted this toy to be better...
Size: 10.5 inch Rubber Flex Tread
I got this toy because I have 3 large dogs that all like to pull things. I can't always play with them even though they follow me everywhere wanting to play, so I saw this toy and thought it would be good because it would give them something they can tug away at with each other. I saw the thick rubber and thought it would last awhile, but I was wrong. My German Shepherd and Pyrenees mix chewed though the first tire rather quick, and before I realized, I was finding chunks of tire around the house and yard. Thankfully, none of them tried to eat it. It seems like it could be a good toy for an aggressive chewer IF they are smaller and not as strong as these large dogs are, but it did not hold up long to mine.
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Reviewed in the United States on November 23, 2024
★★★★★ 5
Great and entertaining dog toy
Color: 4 Color For XS/S 2.2", Size: Small
These are probably my dog’s favorite toys currently. He loves the squeaking and they function well as a ball for fetching as well.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Husky loves them
Color: 4 Colors For M/L 3.1", Size: Large
good size and nice quality
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Our dog loved these?!!
Color: 4 Color For XS/S 2.2", Size: Small
We have a miniature long haired Dachshund named Winston and OMG HE ABSOLUTELY LOVES THESE squeaky toys. I swear he must have played with them for 6 hours straight the first time we gave it to him. He love it so much that he even took it to bed with him that 1st night.
Many months later these are still his favorite toys. I think he likes the saucer-like shape of them & how they fit & feel in his mouth. The squeakers don't last very long but that's always been the case with squeaky toys & it doesn't seem to bother Winston much either.
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Reviewed in the United States on May 19, 2026
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