This blog post is an excerpt from Arjan Khalsa's white paper, "Demystifying the Multiplication and Division of Fractions":

“Dividing fractions is conceptually similar to dividing whole numbers, in that students can think about how many times the divisor goes into the dividend. For example, 1/2 ÷ 1/4 can be represented in terms of “How many 1/4s are in 1...