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Description
小學生必備的100個科學知識: QR CodeSTEAM * * * * QR Code * * 25100
作者: 星島教育
無葉風扇、時鐘、單車、QR Code、電池、糖果、汽水、消毒用品…這些小朋友熟悉的身邊事物，處處都藏着有趣的科學應用；小學的STEAM教育着重以科學知識解決真實問題，日常生活就是最好的科學課堂，從身邊事物激發好奇心，學習背後的科學原理，是培養小朋友自學力、打開科學探索之門的第一步。
有趣的科學知識遍布日常生活，你可知道：
* 無葉風扇的風與飛機飛行，都應用了同一科學原理？
* 世上最準確的時鐘是以化學元素為驅動力？
* 無人駕駛的單車滾落斜坡時，懂得自己平衡？
* 為何QR Code底部有圖案，仍然可以讀取？
* 為冰川蓋被子可以拯救冰川融化？
* 消毒酒精是萬能的消毒劑嗎？
本書精選25個科學常識主題，內容涵蓋五大類别：生活應用、人體奧秘、地球科學、食品科學、看不見的微生物，書中以貼近生活和世界發展主題，連姞100個小學生必備的科學知識點，每篇同時設有「陽光劇場」漫畫，以生動有趣的方式，深入淺出講解與主題相關的科學知識及原理。
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4.0 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Great product
Style: Sport, Size: Large
This is a lifesaver. My lab will chase the ball all day and this saves the arms and shoulders. A little bit of a learning curve to use but I would definitely recommend
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Labs love this!!!
Style: Sport, Size: Large
Our Lab LOVES everything about this thing! Recommend getting extra durable balls as the 1 included fell apart in 1 hour. I have a very energetic Lab retriever that we have to force to stop playing ball so he does not overheat. That & the force with which you can throw this ball did not help keeping it from splitting it in 2 in less than 1 hour.
This is worth the money for the extra throwing power & distance but do invest in the ULTRA strong ball for dogs like retrievers! Also, be sure to order the correct SIZE OF BALL, specific to each different size of throwing wand.
My fav thing about this item is #1 the joy my dog gets from the new challenge of racing to catch longer throws, & #2 I don't have to get my hands covered in dog slobber!!
He has gotten to where he can almost put it in the cup himself so I won't waste time throwing the ball again!
Man, I love that dog!!! ❤️
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Reviewed in the United States on November 1, 2023
★★★★★ 5
Must-Have for Active Dogs!
Style: Sport, Size: Large
The Chuckit Sport 26L Dog Ball Launcher has been a game-changer for my large dog! My 80-pound Labrador loves to play fetch, and this launcher makes it so much easier and more enjoyable for both of us.
The 26” length gives me the leverage to throw the ball much farther than I could by hand, which really helps burn off my dog’s energy. The included large ball (3”) is the perfect size for big dogs, and I appreciate that it’s made from durable rubber, so it withstands a lot of chewing and rough play.
What I really love is that the launcher is so lightweight and easy to use. I can play fetch with my dog for extended periods without my arm getting tired. The ergonomic handle also provides a comfortable grip, which is a nice touch.
If you have a large, active dog, the Chuckit Sport 26L is a must-have. It’s well-made, durable, and makes fetch more fun for both you and your dog. Highly recommend!
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Reviewed in the United States on September 3, 2024
★★★★★ 5
ChuckIt is AMAZING!
Style: Sport, Size: Large
I can't throw a ball to save my soul. Just got this today and lobbed a ball to the far end of my 1- acre yard. The dog loves it, and I love it!
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Reviewed in the United States on March 8, 2026
★★★★★ 4
I recommend using the KONG Extreme Dog Toy
Style: Sport, Size: Large
Helpful for throwing as much as my dog wants to fetch. I actually had to get a cortisone injection in my shoulder a few months after getting my dog - never had a dog with this much energy before! The Chuckit really helps.
Downside: The ball that comes with it is larger than a tennis ball, so may be too much for smaller doge. I can't imagine my sister-in-law's french bulldog carrying it! Also, in our house it gets destroyed within minutes, as my dog is a strong chewer. For this situation, I recommend using the KONG Extreme Dog Toy, Black, size Large.
This is shaped sort of like a snowman, which means it bounces unpredictably at times. My dog eventually chews the "head" off of this toy, but the remaining 2/3 still fits in the Chuckit (and is actually easier to throw with the "head" missing!). One caveat: the KONG is significantly heavier than the ball included with the Chuckit, so be aware of that...
Also, we ordered our first Chickit in October 2015, then needed to replace it in May of 2017, as it broke. I think the plastic became brittle over that time, as we left it out in the sun & rain in Florida. Since it is cheap to replace, that's not a big deal. (We ordered three Kong toys over that same period of time!)
To summarize, it's a very helpful tool to get the ball further, faster, with less strain, than without it. Knowing there are alternatives to the included ball for heavy chewers makes it worthwhile.
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Reviewed in the United States on July 19, 2017
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