欢迎！今天我们来学习分数。分数表示整体的一部分。它显示我们有多少个相等的部分占总部分数的比例。分数有两个主要部分：分子，也就是上面的数字，和分母，也就是下面的数字。
现在我们来学习分数的读法和写法。分数的读法是先读分母，再读分子。比如二分之一、四分之三、八分之五。分数的写法是分子写在上面，分母写在下面，中间用一条横线分开。
接下来我们学习如何比较分数的大小。有三种主要方法：第一，当分母相同时，分子大的分数就大，比如五分之三大于五分之二。第二，当分子相同时，分母小的分数大，比如三分之一大于四分之一。第三种方法是通分后再比较。
让我们总结一下今天学到的内容：分数表示整体的一部分，由分子和分母组成。分数的读法是先读分母再读分子。比较分数大小可以通过分母相同比分子或分子相同比分母的方法。分数在我们的日常生活中有广泛的应用。
Now we learn how to read and write fractions. To read a fraction, we say the denominator first, then the numerator. For example, one half, three fourths, five eighths. To write a fraction, the numerator goes on top, the denominator goes on bottom, separated by a horizontal line.
Next we learn how to compare fractions. There are three main methods. First, when denominators are the same, the fraction with the larger numerator is bigger, like three fifths is greater than two fifths. Second, when numerators are the same, the fraction with the smaller denominator is bigger, like one third is greater than one fourth. The third method is to find common denominators and then compare.
Fractions are widely used in daily life. For example, when sharing a cake divided into 8 pieces and eating 3 pieces, we have eaten three eighths of the cake. Half an hour is one half hour. Walking two thirds of the total distance. Getting four fifths of the total score on a test. These examples show how fractions help us describe parts of a whole in real situations.
Let us summarize what we have learned today. Fractions represent parts of a whole, consisting of a numerator and denominator. To read fractions, we say the denominator first, then the numerator. To compare fractions, we can compare numerators when denominators are the same, or compare denominators when numerators are the same. Fractions have wide applications in our daily life.