If students use calculators, they’ll never develop their math skills, such as how to add, subtract,multiply and divide. Actually, I think that it is really important for students to put brains to use instead of letting them rust.

解析 不使用计算器可以更好地培养数学能力，显然这个素材适用于 “不使用计算器” 的题目。此外，如果题目中出现了 “电子设备” ，考生也可以联想到此素材，比如 “小孩子不应该 尽早接触电子设备” 。使用此类素材回答时，主题句中的关键词为：not be able to develop math skills、have a rusty brain等。

词汇和表达

★ add, subtract, multiply and divide 加减乘除

★ let sth. rust 让某物变迟钝

适用题目范围 学生不应该用计算器/孩子不应该过早使用电子产品等

适用题目

（1） Some believe that all students should learn math while they are students, while others argue only those who use math when they are working need to learn math. Which one do you prefer and why?[2019-3-30]

（2） Do you agree or disagree with the following statement: Children should gain access to computers and other electronic devices as early as possible?[2018-3-31]

（3） Do you agree or disagree with the following statement: Students should not be allowed to use calculator in math classes or exams?[2017-12-16] mVyDx4bzne3MXGRI0rCa4TDSB3eH5PaGsbbWqMs8v9PDzd4+qoA0TmJxjoh9RXHc