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はまちゃん先生｜学びを楽しく

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Can you answer correctly ❓

Even though there are no difficult calculations, 70% of third-year junior high school students made mistakes 💦

National Academic Achievement Learning Status Survey

The first question is "Choose a prime number from the following."

It was a problem.

A prime number is a number that can only be represented by the product of 1 and its own number.

6 is not a prime number because it can be expressed in two ways: 1 × 6 and 2 × 3 ✋

The most common mistake in this problem

To choose "1" ‼️

In textbooks, it is always written that 1 is not a prime number.

It is important to understand the math language correctly before taking the exam 💡

Let's save this post and study hard so that everyone in the third grade of junior high school this year can answer this question 💪

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Former elementary school teacher 🏫 → Professional tutor ✏️

↓ Have fun learning math Post from here

はまちゃん先生｜学びを楽しく@

Tutoring to love learning ✨

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# math The study method # parenting # math High School Exam

4/25 Edited to

素数の理解は数学の基本ですが、意外と間違いやすいポイントもありますね。私も学生時代に『1は素数か？』で迷った経験があります。素数とは「1とその数自身以外に約数がない数」であり、1は約数が1つしかないため素数には含まれません。さらに、素数を正しく覚えるためには具体例を挙げることが効果的です。例えば、2、3、5、7、11などは素数ですが、6や9は素数ではありません。6は1×6と2×3の2通りに表せるためです。この基本の理解ができると受験の際に数学の問題をスムーズに解けるようになります。私が指導している生徒たちにも素数の意味を繰り返し伝えていますが、実際に問題を解くことで理解が深まり、間違いが減っています。また、定期的にこのような基本問題を復習するのがおすすめです。特に中学一年生で学んだ内容でも、受験前にしっかり復習することで自信を持って解答できます。この記事の問題を繰り返し練習し、数学の言葉を正しく理解しましょう！

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