View the video for 4.NF.1 Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. After watching the video discuss strategies that will help students better understand how fractions are equivalent.
Unit 6 page 151-152: Provide students with two fractions for each type of comparison situation. As students are solving the problems ask them to come up with a rule that helps them solve the problem. Read “Strategies for Comparing Fractions” on page 151-152 Discuss the conjecture for each strategy.
View the video for the standard 4.NF.2 Compare two fractions with different numerators and different denominators, e.g., by creating common denominators or numerators, or by comparing to a benchmark fraction such as 1/2. Review how to teach comparing fractions using a number line and a visual representation.
159- End of Unit Assessment