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第100章 高一班课堂(1 / 2)

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新学期的钟声敲响,李时晴和刘怡欣满怀期待又略带紧张地踏入了高中校园,迈进了高一的新班级。教室里叽叽喳喳,同学们都在兴奋地分享着假期的见闻,李时晴和刘怡欣刚找到座位坐下,就被周围的热闹氛围感染。

“嘿,时晴,你听说了吗?咱们这学期的课程可难了,尤其是数学,听说函数那部分简直是‘恶魔’级别。”刘怡欣凑过来,一脸担忧地说道。

李时晴故作镇定地摆摆手:“怕啥,兵来将挡水来土掩,咱们这么聪明,肯定能搞定。”

这时,上课铃突然响了起来,一位戴着黑框眼镜,穿着格子衬衫的老师夹着一叠厚厚的教案大步走进教室。他推了推眼镜,眼神犀利地扫视了一圈教室,教室里瞬间安静得连根针掉在地上都能听见。

“同学们好,我是你们的班主任兼数学老师,我姓张。从今天起,我将带领大家遨游数学的海洋,首先,我们来攻克函数这个难关。”张老师的声音低沉而有力。

李时晴在下面小声嘀咕:“这老师看起来挺严肃,希望讲得不要太枯燥。”

张老师似乎听到了她的嘀咕,嘴角微微上扬:“有些同学可能觉得数学很枯燥,那是因为你们还没发现它的乐趣。比如说函数,它就像一个神秘的魔法盒子,你给它一个输入,它就能给你一个独特的输出,是不是很神奇?”

接着,张老师开始在黑板上奋笔疾书,讲解函数的定义和基本概念。

刘怡欣听得一头雾水,忍不住举手提问:“老师,这个 f(x)到底是啥意思啊?为啥要这么表示呢?”

张老师笑着回答:“这 f(x)啊,就像是一个神秘的代号,代表着函数这个魔法盒子的作用规则。你可以把它想象成一个厨师,x 就是食材,放进厨师的魔法锅里,经过 f 这个独特的烹饪方式,就会出来一道美味的菜肴,也就是函数的值。这样说,大家是不是好理解一些?”

同学们哄堂大笑,教室里的气氛一下子活跃了起来。

李时晴也跟着笑,突然她灵机一动:“老师,那如果把我们的考试成绩当作 x,经过您的教导这个 f 作用后,是不是都能变成满分这个美味菜肴呢?”

张老师也被逗乐了:“要是真有这么神奇的函数,那老师可就成了魔法师了。不过,只要大家认真学习,成绩肯定会有所提升的。”

张老师看大家对函数有了些兴趣,便讲起了一个小故事:“曾经有一个数学家,他非常痴迷于函数的研究。有一天,他去市场买苹果,老板告诉他苹果每斤 5 元。这位数学家突然灵感大发,他把买的苹果重量设为 x,那么总价 y 就和 x 构成了一个函数关系,y = 5x。他就一边挑着苹果,一边在脑海里计算着不同重量的苹果对应的总价,结果挑了半天,苹果没买几个,倒是把周围的人都看懵了。老板还以为他不想买苹果,在故意找茬呢。后来,这位数学家通过对生活中这些简单函数关系的深入研究,发现了许多重要的数学原理。所以说,函数其实就在我们的生活中,只要大家善于观察和思考。”

同学们听得津津有味,在轻松愉快的氛围中,一节数学课很快就过去了。课间休息时,同学们纷纷围在一起讨论刚才的知识点。

“我觉得函数也没有想象中那么难嘛。”张晨笑着说。

刘怡欣白了他一眼:“你那是因为老师讲得好,等会儿语文和英语课,有你受的。”

语文课上,语文老师是一位气质优雅的女士,她拿着一本古诗词集走进教室。

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