Worksheet
PBS

Working with Common Denominators: Activities and Supplemental Materials

For Students 4th - 6th Standards
Enjoy these straightforward and simple worksheet pages that practice with different denominators. The practice starts simple with adding fractions together and then works on a recipe that needs to be tripled. 
Interactive
Visual Fractions

Visual Fractions: Rename in Lowest Terms

For Students 3rd - 8th Standards
Practice finding the lowest term name for a variety of different fractions using a number line.