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Ships within 48 hours · Estimated delivery Jul 1 - Jul 6
For Your Every Summer RSVP, with Code: SUMMER15
Description
Power-UpA fun and lively look at the mathematical ideas concealed in video games. Did you know that every time you pick up the controller to your PlayStation or Xbox, you are entering a world steeped in mathematics? Matthew Lane reveals the hidden mathematics in many of today's most popular video games and explains why mathematical learning doesn't just happen in the classroom. He discusses how gamers are engaging with the travelling salesman problem when

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4.8 ★★★★★
Based on 994 reviews
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Product Reviews
★★★★★ 5
Le quedaron bien a mi hijos
Size: 8.5, Color: Black
El zapatos ese buenísimo
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
★★★★★ 5
Comfortable and Classic Dress Shoes That Look Great All Day
Size: 12, Color: Cognac
These dress shoes have been a great addition to my wardrobe. Right out of the box, they felt comfortable thanks to the cushioned foam insole. I can wear them for long days at work or events without my feet feeling sore, which is something I really appreciate.
The faux leather upper looks polished and well-made. The cap-toe design and subtle contrast stitching give the shoes a classic, professional appearance that pairs perfectly with dress pants or a suit. They have a clean, timeless style that never feels outdated.
The fit is true to size, and the lace-up closure provides a secure and adjustable fit. I also like the stability of the stacked heel and the non-slip sole, which gives me confidence when walking on different surfaces.
Overall, these shoes deliver both comfort and style. They look sharp, feel supportive, and hold up well with regular use. I am very happy with this purchase and would definitely recommend them to anyone looking for reliable, classic dress shoes.
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Denim feels thin but soft
Size: 32W x 32L, Color: All My Days Selvedge
The denim seems thinner than from years ago. 100% cotton feels soft. Fit me same as other stretchy 505 that are made with elastine. Waist size is fine. Haven't washed them yet. Yes, the price is high, but I like the 100% cotton and will likely buy more selvedge jeans.
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Reviewed in the United States on January 1, 2026
★★★★★ 5
100 cotton
Size: 33W x 32L, Color: Midnight Selvedge
These are great, just keep in mind that 100% cotton is not the same as 99 cotton 1 elastane, so size up if you tend to be in between mesures at waist.
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Reviewed in the United States on January 15, 2026
★★★★★ 4
A little pricey for what you get.
Size: 34W x 30L, Color: All My Days Selvedge
I like them.
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Reviewed in the United States on December 20, 2025
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