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Daily English - Fractions in Math

作者 WaitZ
Daily EnglishLearning Journalbeginnermathematicsfractionsfractions-in-mathbeginner

今日主題 (Today's Topic)

主題: Fractions in Math
難度: beginner
分類: Daily English / Learning Journal

關鍵詞彙 (Key Vocabulary)

本主題的重要詞彙與片語

  • numerator: 分子。分數中上方的數字,表示我們有多少部分。

    • 例句:In the fraction 3/4, the numerator is 3.(在分數 3/4 中,分子是 3。)
  • denominator: 分母。分數中下方的數字,表示整體被分成多少等份。

    • 例句:The denominator tells us how many equal parts the whole is divided into.(分母告訴我們整體被分成多少等份。)
  • improper fraction: 假分數。分子大於或等於分母的分數。

    • 例句:Seven fourths (7/4) is an improper fraction.(七分之四是一個假分數。)
  • proper fraction: 真分數。分子小於分母的分數。

    • 例句:Three quarters (3/4) is a proper fraction because the numerator is less than the denominator.(四分之三是真分數,因為分子小於分母。)
  • mixed number: 帶分數。由整數和真分數組成。

    • 例句:One and three quarters (1 3/4) is a mixed number.(一又四分之三是帶分數。)

實例與應用 (Examples & Application)

提供實際例句或應用情境

例句一:烹飪場景

"The recipe calls for three quarters of a cup of sugar."
(食譜需要四分之三杯糖。)

例句二:分享食物

"I ate one third of the pizza, and my sister ate two thirds."
(我吃了三分之一的披薩,我姐姐吃了三分之二。)

例句三:數學課堂

"To simplify this fraction, we need to divide both the numerator and the denominator by their greatest common divisor."
(要簡化這個分數,我們需要將分子和分母都除以它們的最大公約數。)

實踐練習 (Practice Activities)

透過多種方式練習今日主題,專注於實際應用和口說表達

口說練習

大聲朗讀並練習說出以下句子,注重發音和流暢度

  • "The numerator is on top, and the denominator is on the bottom."
    (分子在上面,分母在下面。)

  • "Can you convert this improper fraction into a mixed number?"
    (你能把這個假分數轉換成帶分數嗎?)

  • "One half plus one quarter equals three quarters."
    (二分之一加四分之一等於四分之三。)

  • "In the fraction five eighths, five is the numerator and eight is the denominator."
    (在分數八分之五中,五是分子,八是分母。)

情境對話

模擬真實情境,練習使用今日學習的內容進行對話

情境:在數學輔導課上,老師正在教學生理解分數

Teacher: "Can you tell me what a fraction represents?"
Student: "A fraction represents a part of a whole. It has a numerator on top and a denominator on the bottom."

Teacher: "Excellent! Now, look at this fraction: 5/3. What kind of fraction is this?"
Student: "This is an improper fraction because the numerator is greater than the denominator."

Teacher: "That's right! Can you convert it to a mixed number?"
Student: "Yes, 5/3 equals one and two thirds."

Teacher: "Perfect! You really understand fractions well."


翻譯:

  • 老師:你能告訴我分數代表什麼嗎?
  • 學生:分數代表整體的一部分。它上面有分子,下面有分母。
  • 老師:很好!現在,看看這個分數:5/3。這是什麼類型的分數?
  • 學生:這是假分數,因為分子大於分母。
  • 老師:沒錯!你能把它轉換成帶分數嗎?
  • 學生:可以,5/3 等於一又三分之二。
  • 老師:完美!你真的很理解分數。

練習筆記

記錄你在練習過程中的發現、困難或有趣的觀察

發音注意事項:

  • "numerator" 的重音在第一音節:NU-mer-a-tor
  • "denominator" 的重音在第三音節:de-nom-i-NA-tor
  • 分數讀法:1/2 = "one half", 1/3 = "one third", 1/4 = "one quarter", 3/4 = "three quarters"

常用表達:

  • 當分子是 1 時,分母用單數:one third, one fifth
  • 當分子大於 1 時,分母用複數:two thirds, three fifths
  • 特殊讀法:1/2 = "a half" 或 "one half", 1/4 = "a quarter" 或 "one quarter"

今日反思 (Daily Reflection)

收穫重點: 過去在小學聽到的幾乎都是中文,所以沒有機會去理解,就算上了大學可能有看過這些字,但沒有仔細的去看,所以現在回頭來記錄這些詞,恰好在一些leetcode上的題目也會頻繁遇到這些字,所以我就先記錄下來,方便以後忘記可以再回來看!