紙を何回折れば月に届く?半分と2倍の算数
    One-day
    教養・探究
    科学探究

紙を何回折れば月に届く?半分と2倍の算数

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紙を1回折ると厚さは2倍、2回折ると4倍。 ではそれを繰り返していくとどうなる? 折り紙を使って「半分」と「2倍」の関係を体験し、倍々に増える数の驚きを発見します。

27,500G(US$18.97)
Class Type

One Day

Ages

9-12

Class Size

Max 6people

Duration

45min

Replay
前田早弥

前田早弥

Reviews

0

Rating

5

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折り紙を1回折ると、厚さは2倍になります。

では、2回折ると?3回折ると?10回折ると?

実は紙を折るたびに厚さが2倍になるというルールを繰り返すと、驚くほど大きな数になっていきます。


この授業では、折り紙を使って「半分」と「2倍」の関係を体験しながら、数が増えていく不思議を探ります。

まずは、紙を実際に半分に折ってみましょう。

折るたびに、紙の枚数や厚さはどう変わるでしょうか?


規則性を見つけたら、その先はどうなるのかを予想してみます。

ここで登場するのが、倍々に増えていく数の面白さです。

最初は少しずつしか増えていないように見えても、回数を重ねると、あっという間にとても大きな数になります。

また、紙を半分に分けることと、厚さが2倍になることを行き来しながら、同じ数の関係を違う視点から考えてみます。


折り紙を使った実験と思考を通じて、

数の規則性を見つける力

数量の変化を予想する力

計算結果から驚きや発見を得る力

を育むきっかけをつくります。


算数は、計算問題を解くだけではありません。

たった一枚の紙から、月まで届くような壮大な数の世界を想像することもできます。

身近な折り紙を使って、算数の面白さを体験してみましょう!

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Teacher Info

Auto-translated to English.

前田早弥

前田早弥

Reviews

0

Rating

5

Hello. I'm a science instructor who leverages my experience as a PhD in science, having conducted research at universities and companies, to help children discover the joy of learning. What I value most is not simply teaching knowledge, but rather helping children experience the fun of thinking, experimenting, and discovering for themselves. Science isn't a subject where you memorize correct answers. It starts with small curiosities like, "Why?" "I want to try!" The process of making predictions, experimenting, thinking, and trying again is what I believe true learning is. In my lessons, I emphasize experiences that transform "Wow!" into "Aha!" through experiments and observations using everyday materials. Even if the results differ from expectations, it's not a failure, but a new discovery. I strive to create an atmosphere where children feel safe and comfortable trying new things. On the other hand, what I truly want to cultivate isn't just scientific knowledge. Each child has different "likes," "strengths," and "passions." For example, some children enjoy observation. Some children excel at crafts. Some children enjoy explaining things to their friends. Some children repeatedly ask "why?" These differences are what make each child unique, and I believe they are the seeds of their future strengths. That's why, even in lessons, I don't just end with "That was fun," but instead I value dialogue such as: "What did you enjoy the most?" "What excited you?" "What would you like to try next?" It's not just about acquiring knowledge; it's about discovering one's own interests and preferred learning styles. I believe this leads to self-understanding and the ability to continue learning independently. Furthermore, while incorporating learning from StrengthsFinder (CliftonStrengths) and coaching, I value the idea that "everyone is different" and "everyone has their own unique way of learning." More than whether a child is good or bad at studying, I believe that discovering together "what motivates them" "what they can become engrossed in" is the first step in fostering children's self-esteem and initiative. As a researcher, mother, and educator, I've witnessed countless instances where "what you discover through experimentation is more memorable than being given the correct answer." That's why, in my lessons, I prioritize "time for children to think, discuss, and experiment" over "time for the teacher to instruct." I want to create a learning environment where children naturally feel, "I want to learn more because it's interesting!" rather than "I have to work hard because it's studying." Children who love science are welcome, of course, but so are those who "struggle a little with science but love experiments," "find it difficult to ask questions at school," or "want to discover what they love." We value each child's desire to "try," and provide a time where they can learn and grow in their own way.

Experience & Activities

·

20 years of research experience, from university to major chemical manufacturer.

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We have held over 20 real science workshops at public facilities such as elementary schools and community centers.

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Over 150 online science courses have been held in total.

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We are always accepting applications for individualized science lessons and support for independent research projects tailored to each family.

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As a self-understanding coach, I provide one-on-one support to help you discover what you truly want to do.

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