Virtual Manipulatives
http://www.glencoe.com/sites/common_assets/mathematics/ebook_assets/vmf/VMF-Interface.html

Variety of virtual manipulatives for interactive whiteboards (IWB's)

Virtual Manipulatives http://bit.ly/dxfNI0 #edtech #math – Jeff Thomas (jdthomas7) http://twitter.com/jdthomas7/statuses/14415867622

tools designed for teacher-facilitated instruction, and include sample problems to give teachers instructional suggestions. For each tool you will find a short instructional video, standards alignment (including the recent Common Core State Standards), key vocabulary, and IEP goals

Focus on teaching fractions!

Conceptua (MeTRIC): standards-based, teacher facilitated math tools... procedural, higher-order concepts, etc.

This site provides visual math lessons. Though this site specializes in fractions, there are pieces any level math teacher can grab from here.