學英語的有效方法
對照課文聽錄音
Problem Solving
John spent ＄10 in all on a hot dog and soda at the baseball game. The hot dog cost ＄6 than the soda. How much did the hot dog cost? How much did the soda cost?
在棒球運動會上約翰花了10美元買了一個熱狗和一瓶汽水。熱狗比汽水貴6美元。買熱狗花了多少錢？買汽水又花了多少錢？
(1)Understand the problem:
(1)理解問題：
What do you want to know?
你想要知道什麼？
How much did the hot dog cost? How much did the soda cost?
熱狗多少錢？汽水多少錢？
What information is given?
題中給了哪些信息？
Clue 1: ＄hot dog + ＄soda = ＄10
線索1：熱狗的花費+汽水的花費＝10美元
Clue 2: ＄hot dog - ＄soda= ＄6
線索2：熱狗的.花費－汽水的花費＝6美元
(2)Plan how to solve it:
(2)打算如何解決問題：
What method can you use?
你會用什麼方法？
You can guess an answer for the first clue. Then you can check your guess with the second clue.
針對第一個線索你可以猜測一個答案。然後你再用第二個線索檢測你的猜測是否正確。
(3)Solve it:
(3)解決問題：
How can you use this method to solve the problem?
你如何用這種方法解決問題？
You know that hot dog costs ＄6 than the soda. Use 6 as your first guess. Think about what two numbers could equal to. Make a table to organize your guesses.
你知道熱狗的價錢比汽水貴6美元。可以把6作為你的第一個猜測，同時想想兩個數字相加等於多少。列出表格來組織你的猜測。
What is the answer?
結果是什麼？
Hot dog cost ＄8.
熱狗的價錢是8美元。
Soda cost ＄2.
汽水的價錢是2美元。
(4)Look back and check your answer:
(4)回過頭來再檢驗你的答案：
Is your answer reasonable?
你的答案合理嗎？
Clue 1: ＄hot dog + ＄soda = ＄10
線索1：熱狗的價錢+汽水的價錢＝10美元
Check: 8+2=10
檢驗：8+2=10
Clue 2: ＄hot dog - ＄soda= ＄6
線索2：熱狗的價錢－汽水的價錢＝6美元
Check: 8-2 =6
檢驗：8-2=6
The answer matches the clues. The answer is reasonable.
答案和線索相符合。答案是合理的。
Guess Check Evaluate
猜測 檢查 評估
6+4= 10 6 is only 2 more than 4. 6 is too low.
6+4= 10 6只比4多2。 6太小了。
7+3=10 7 is only 4 more than 3. 7 is too low.
7+3=10 7只比3多4。 7 太小了。
8+2=10 8 is 6 more than 2. 8 is correct.
8+2=10 8比2多6。 8是正確的。
