Fractions - Compare and order (denominator) - Presentation

In a comprehensive lesson on fractions aimed at enhancing students' understanding of denominators, the focus is on comparing and ordering fractions with different denominators. The lesson starts by prompting students to define a denominator and write it in their books. Students then use bar models to visually compare fractions such as 3/4 and 2/3. They are encouraged to discuss how comparing mixed numbers differs from comparing proper fractions and to complete statements by determining which fractions are greater or lesser than others. This activity not only reinforces the concept of denominators but also helps students visualize and understand the value of fractions in relation to one another.

The lesson progresses with Activity 2, where students compare fractions by finding the lowest common multiple (LCM) of the denominators—a critical step in comparing fractions with unlike denominators. For example, they learn to convert 5/6 and 3/4 to equivalent fractions with a common denominator before comparing their sizes. This method is reinforced with further examples and exercises, allowing students to practice and gain confidence in their ability to compare fractions. In the final activity, students are tasked with ordering a set of fractions in descending order, which may involve plotting them on a number line to determine their relative sizes. This comprehensive approach to fractions ensures that students not only learn the techniques but also understand the underlying concepts, aiding them in mastering the curriculum.