Online Resources

PBS KIDS

http://pbskids.org/cyberchase

Thinking Blocks: Fraction Bars

Thinking Blocks are teacher-developed tools that link to the various problem structures. They use two-digit numbers and problems with multiple steps, including "compare," "part-part-whole," and "change" examples. Because the ideas are presented as games, viewing the introduction is a necessary preliminary for playing.

http://www.mathplayground.com/fraction_bars.html

NCTM Illuminations Lessons and Interactives

This website has hundreds of lessons plus interactives. Select the type of lessons that you want as well as the appropriate grade band, and click Search.

http://illuminations.nctm.org/Default.aspx

Interactives

• Fraction Models
• Fraction Track

National Library of Virtual Manipulatives

This site offers numerous models for exploring fractions, including fraction bars and fraction pieces. There is also an applet for comparing and visualizing fractions.

• Diffy
• Fractions - Adding
• Fraction Bars