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Description
數字驚奇大冒險#3 幾何的祕密: : : 7 12 72 19 x 21 x 0. 7 cm 2020107 15PRESIDENT Family5108 1031063 9 22203100
作者: 櫻井進 | 繪者: 不破浩一朗 | 適讀年齡: 7-12 | 繁體中文 | 72 頁 | 平裝 | 19 x 21 x 0.7 cm | 出版日期：2020年10月7日
日本一上市狂賣15萬本的暢銷書，深受小學生喜愛！
《朝日新聞》、《讀賣新聞》、《日本經濟新聞》、《PRESIDENT Family雜誌》等日本各大媒體爭相報導！
日本亞馬遜網路書店讀者5顆星好評推薦
符合108年課綱「數學素養」，應用知識並提升數學力！
隨書附贈「清少納言智慧之板」，邊學邊玩充滿樂趣！
學習重點：加法、減法、乘法、除法、平方、機率、魔方陣、面積、幾何
103×106只要3秒就能算出來！
減法的速算祕訣是「相加為9」？
神奇的「魔方陣」是什麼？
只要掌握正確方法，解題變得簡單又有趣！
小學生數學能力大躍進
數學概念 × 算式規則 × 有趣知識
激發你的潛能，提升數學力！
為了尋找數字寶藏，噗拉斯決定要和好友阿凱、嘻克船長一起進入數字世界，展開一場冒險。成功戰勝魔術島、九九乘法島、金字塔、倍數判定島……之後，他們將要迎接更大的挑戰，繼續闖越找零島、傳說島、推理解謎島、輕鬆乘算島和江戶島等五大數學關卡，一步步解開數字的祕密。包括發現計算機數字鍵和2220的關係、3秒算出接近100的數字相乘的答案、找出魔方陣的不同排法，以及用拼圖板組合出各種圖案；還能推算出一個人一輩子總共活了幾秒……這一切實在太有趣了！
一關接著一關，噗拉斯等人突破重重關卡，練就厲害的數學功力，邏輯推理能力大大提升。一起加入噗拉斯、阿凱和嘻克船長的冒險吧！你會發現不可思議的數字魔力。
《朝日新聞》、《讀賣新聞》、《日本經濟新聞》、《PRESIDENT Family雜誌》等日本各大媒體爭相報導！
日本亞馬遜網路書店讀者5顆星好評推薦
符合108年課綱「數學素養」，應用知識並提升數學力！
隨書附贈「清少納言智慧之板」，邊學邊玩充滿樂趣！
學習重點：加法、減法、乘法、除法、平方、機率、魔方陣、面積、幾何
103×106只要3秒就能算出來！
減法的速算祕訣是「相加為9」？
神奇的「魔方陣」是什麼？
只要掌握正確方法，解題變得簡單又有趣！
小學生數學能力大躍進
數學概念 × 算式規則 × 有趣知識
激發你的潛能，提升數學力！
為了尋找數字寶藏，噗拉斯決定要和好友阿凱、嘻克船長一起進入數字世界，展開一場冒險。成功戰勝魔術島、九九乘法島、金字塔、倍數判定島……之後，他們將要迎接更大的挑戰，繼續闖越找零島、傳說島、推理解謎島、輕鬆乘算島和江戶島等五大數學關卡，一步步解開數字的祕密。包括發現計算機數字鍵和2220的關係、3秒算出接近100的數字相乘的答案、找出魔方陣的不同排法，以及用拼圖板組合出各種圖案；還能推算出一個人一輩子總共活了幾秒……這一切實在太有趣了！
一關接著一關，噗拉斯等人突破重重關卡，練就厲害的數學功力，邏輯推理能力大大提升。一起加入噗拉斯、阿凱和嘻克船長的冒險吧！你會發現不可思議的數字魔力。
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4.1 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
My dog loves them!
Theme: 2 Pack, Size: Medium
Check the size before buying!!
They are great balls tho!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Bouncy, not hard, and good value.
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
Great balls for the ball launcher and not rockhard like some of the solid rubber balls. These have great bounce, and because of the two holes, they make a fun whistling noise as they fly through the air. My dogs love them and they are a good value.
By the way, if you throw them too hard, they will go through chain-link and no climb fence because they squish a bit!
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Reviewed in the United States on February 16, 2026
★★★★★ 5
Excellent dog balls — safe design and very durable
Style: Fetch Balls (Pack of 3), Size: 2.5 inch
These fetch balls from Amazon Basics are fantastic, and my dog absolutely loves them. One of the biggest reasons I prefer these over other brands is the hole that runs through the center of the ball. This is a very important safety feature: if a dog were to accidentally get the ball stuck in the back of the throat, the hole allows air to pass through. That small detail could literally make a life-saving difference.
Aside from the safety benefit, they bounce well, are easy to clean, and hold up to a lot of playtime. They’re firm but not rock-hard, and my dog goes crazy for them. Great value, great quality, and a thoughtful design.
Highly recommended for dog owners who want a safer alternative to standard solid rubber balls.
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Reviewed in the United States on December 1, 2025
★★★★★ 5
Great ball for heavy chewers
Style: Assorted Balls (Pack of 3), Size: 2.5 inch
Great toy for my Doberman. She chews through tennis balls in about 15 minutes but these are very durable. She likes to chase them but also just chew on them.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Durable
Style: Fetch Balls (Pack of 2), Size: 3 inch
Very bouncy. I like the noise it makes when you throw it. Pretty durable. Good size. Dog loves to play with them. Good material. Easy to use.
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Reviewed in the United States on April 5, 2026