mathematics gears Project Genius: Archimedes' Gear
SKU: 31696185685
mathematics gears

mathematics gears Project Genius: Archimedes' Gear

Sale price$26.63 Regular price$29.59
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Description

mathematics gears Project Genius: Archimedes' GearChallenging puzzle inspired by Archimedes mathematical and mechanical genius. Ages: 8+ Difficulty Level: 4 5 Includes: Interlocking Gear Puzzle with Magnetic Pins and Detachable Elements Unleash your inner problem solver with Archimedes Gear, a masterfully crafted puzzle inspired by the brilliance of one of historys greatest mathematicians. At its heart, this intricate puzzle features an array of interlocking gears held together by strategically

Challenging puzzle inspired by Archimedes’ mathematical and mechanical genius.

Ages: 8+

Difficulty Level: 4/5

Includes: Interlocking Gear Puzzle with Magnetic Pins and Detachable Elements

Unleash your inner problem-solver with Archimedes’ Gear, a masterfully crafted puzzle inspired by the brilliance of one of history’s greatest mathematicians. At its heart, this intricate puzzle features an array of interlocking gears held together by strategically placed magnetic pins. Your challenge? Use resourcefulness and imagination to uncover the detachable element, disengage the magnetic force, and shift the gears to separate the layers.

Rated 4 out of 5 in difficulty, Archimedes’ Gear isn’t just a puzzle—it’s an experience. Its deceptively rigid design and seemingly impenetrable mechanics will leave you baffled at first, but that’s part of the genius. As you twist, turn, and inspect its flawless craftsmanship, you’ll uncover the hidden forces at work. The tactile feel, elegant materials, and even the subtle sounds hinting at its secrets make this puzzle as beautiful as it is challenging.

Perfect for puzzle enthusiasts and history lovers alike, Archimedes’ Gear combines brain-teasing complexity with the thrill of solving an ancient-inspired mystery. Are you ready to take on this mind-bending masterpiece?


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SKU: 31696185685

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JT Rose
Waukegan, US
★★★★★ 5
Working really well so far! Equal if not better than Sensodyne
Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint
Love this toothpaste!! Ive been using Sensodyne for a while because I have had lots of cavities and such sensitivity. Ive gotta say this is equal to if not befter then Sensodyne! Its DEFINITELY helped my teeth sensitivity and it whitened them!! I will continue this and hope it keeps working and prevents future cavities. This flavor is also awesome.
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Reviewed in the United States on April 10, 2026
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Kimberly D.K. Schmitt
Grantham, US
★★★★★ 5
Love it BUT it MAY cause dry mouth?
Size: Pack of 1, 4 Ounce, Set name: B. Probiotic - Peppermint
I love the mild minty flavor and the fact it is probiotic. I have been using Boka flouride free Nana-Hydroxyapatite since June 2025. At that time, my front teeth had begun to appear somewhat translucent. When I asked my dentist about it I was told it was due to my age (52) and losing minerals & enamel in/on my teeth. After some research, I discovered nano-hydroxyapatite and figured, ‘why not’? My teeth have always been sensitive and my gums prone to bleeding. I have always used Sensodyne and was unsure of changing but I have found my teeth ate less sensitive now. I just had my 6 month check up & my gums hardly bled & my front teeth are far more ‘solid’ looking! The hygienist complimented me on my improvement since the last check up. All I’ve done differently is the toothpaste! I am not certain if the toothpaste is the reason (due to lack of fluoride) for my new symptom of dry mouth but I haven’t begun any new Rx’s. I am thinking it is the toothpaste because the products I found to aid with dry mouth all contain fluoride. Just a heads up.
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Reviewed in the United States on March 5, 2026
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Kris Todd
Lake Worth, US
★★★★★ 4
Clean, unharmful ingredients.
Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint
Good stuff. I had somekind of an allergic reaction to a chemical in it, as I do most toothpaste though. Whatever it is, strips the lining of the inside of my mouth. It wasn't as bad as some of the other's that I have used though. I need to find out what it is in the toothpastes that I use that does this, so I can stay away from it. Otherwise, I liked the taste and how good it cleaned my teeth.
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Reviewed in the United States on March 17, 2026
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Vlad
Grantham, US
★★★★★ 5
Fresh Taste and Super Clean Feeling
Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint, Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint
I’ve been using this toothpaste for a while now and just ordered my second tube. The citrus mint flavor is really — fresh but not overpowering. I also love that it’s safe for kids, so the whole family can use it. The fine particles leave my teeth feeling super clean and smooth, almost “squeaky clean” after brushing. It keeps my mouth feeling fresh for a long time and I’ve noticed much less plaque buildup throughout the day. Definitely one of the best fluoride-free toothpastes I’ve tried so far.
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Reviewed in the United States on May 29, 2026
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Amazon Customer
Cuba, US
★★★★★ 5
Love, love, love!
Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint
I love this toothpaste! It has done an amazing job removing plaque. It has helped my sensitivity immediately and I am able to handle cold water or drinks again without any pain. I also love that this is a prebiotic toothpaste.
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Reviewed in the United States on May 30, 2026

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