Daily English - Fractions in Math
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!