Explain equivalence of fractions with denominators 2, 3, 4, 6, and 8 in special cases, and compare fractions by reasoning about their size.
b. Recognize and generate simple equivalent fractions, e.g., 1/2 = 2/4, 4/6 = 2/3. Explain why the fractions are equivalent, e.g., by using a visual fraction model.
Issue the Using Models to Represent Equivalent Fractions sheet and map pencils to each student. Lead students through the first problem on the sheet. Discuss the number of parts on each model and emphasize that both models are the same length. Have students state the parts as thirds and sixths. Direct students to shade one part of the thirds model as directed on the sheet.
1⁄3 = 2⁄6
One-third is equal to 2 sixths or 2 sixths is equal to one-third.
Ask questions to check for understanding.