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Activity
National Council of Teachers of Mathematics

The Math Forum: Intro to Measurement for Primary Students

For Teachers 1st - 5th Standards
This site from the Math Forum is a great introduction to measurement for primary students. Each measurement activity has four components: interactive, manipulative-based project; technology; paper/pencil practice; literature connection.
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Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: A Tour of Measurement

For Teachers 9th - 10th Standards
Peruse a collection of lesson plans, resources and FAQ's about measurement at every grade level.