Other
Ohio Department of Education: Models for Dividing Fractions [Pdf]
This resource consists of a detailed, hands-on lesson plan for dividing fractions using manipulatives such as fraction bars.
Utah Education Network
Uen: Modeling Multiplication and Division of Fractions
Detailed lesson plan for multiplying and dividing fractions using visual models such as a number line or fraction bars.
Visual Fractions
Visual Fractions: Divide Fractions With Circles
Use the circles on this interactive site to learn and practice dividing fractions. An explanation is available for each question, and you receive immediate feedback for your answers.