ABCya
Ab Cya: Elementary Math: Virtual Manipulatives: Decimal Tiles
This is a fun way for students to explore and understand how parts make up a whole. Explore fractions, percentages and decimals with this game.
abcteach
Abcteach: Fractions
[Free Registration/Login Required] A collection of teacher-created fraction activities, patterns, and manipulatives that are printable. Includes flashcards, worksheets and a take-home project with fractions for both primary and elementary.
National Council of Teachers of Mathematics
The Math Forum: Intro to Fractions for Primary Students
This site from the Math Forum is a series of lesson plans with great ideas and an excellent Web site that uses virtual manipulatives with students.
National Council of Teachers of Mathematics
The Math Forum: Line Symmetry
This site from The Math Forum is a great site if you are looking for activities to engage your students in learning about line symmetry. Peruse this collection of activities for one or two or four that would be right for your students....
Better Lesson
Better Lesson: Smiley Faces and Up
Automaticity with patterns that allow students to easily manipulate larger numbers is the aim of this lesson.
Other
Interactive Pattern Blocks
A colorful, engaging site where students can manipulate pattern blocks to create patterns or pictures. Included in the detailed directions are possible activities and a feature that allows you to email your patterns to a friend.
Khan Academy
Khan Academy: Rational Exponents Challenge
Choose equivalent forms of radical and exponential expressions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Rational Exponents Challenge
Choose equivalent forms of radical and exponential expressions.