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第一課主題:小数、小數的單位、小數的寫法本課計劃Ⅰ.講授新教材:(1)本課主要目的是使學生弄清“小數”這一概念,有些學生可能這樣想:“有小數點的數就是小數”或“比1小的數就是小數”但這两種說法,都不足以說明“小數”到底是什么?谝粋€說法的毛病在於用“小數點”這一名詞下小數的定義而小數點是什么在這里還是一個未定義的名词。第二個说法顯然失去它的完全
Lesson 1 Topic: Decimal, Decimal Units, Decimal Writing This lesson plans I. Teaching new materials: (1) The main purpose of this lesson is to make students understand the concept of “decimals,” and some students may think so: “Yes The number of decimal points is a decimal number or “a number smaller than 1 is a decimal number.” But these two statements are not enough to explain what the “decimals” are. The problem with the decimal point is to use the term “decimal point.” What is the definition of decimal and what is the decimal point? Here is an undefined term. The second statement apparently lost its completeness