Here is a hilarious, but also sad video made by my friend Amy Lehew, who heads up K-5 Mathematics for Charlotte-Mecklenburg Schools.
Students in 3rd-5th grade struggle with comparing fractions and at times these algorithms or tricks only further confuses them.
Want some good fractions resources?
One of my favorite new books- Beyond Pizzas and Pies. This book provides strategies and research related to students’ misconceptions of fractions– essential for elementary school students!