MathForum - A Tour of Measurement
http://mathforum.org/paths/measurement/

Measurement: Lesson Plans
http://mathforum.org/paths/measurement/dpi.measure.html

National Library of Virtual Manipulatives
http://nlvm.usu.edu/en/nav/topic_t_4.html

Annenberg Media: Measurement
http://www.learner.org/resources/series184.html

eMINTS: eTHEMES: Metric Measurement
http://www.emints.org/ethemes/resources/S00000356.shtml

eMINTS: eTHEMES: Customary or Standard Measurement
http://www.emints.org/ethemes/resources/S00000407.shtml

BBC: ReviseWise Maths - Measurement
http://www.bbc.co.uk/schools/revisewise/maths/shape/13_act.shtml

AAAMath - Measurements
http://www.aaamath.com/B/mea.htm

Measurement Worksheets
http://www.teach-nology.com/worksheets/math/measure/

Measurement Central
http://www.measurementcentral.com/s/math_measurement

Learning Math: Measurement
http://www.learner.org/channel/courses/learningmath/measurement/index.html

Fact Monster: Measurement
http://www.factmonster.com/ipka/A0876863.html

Measurement Lessons!
http://www.geocities.com/smilecdg/measuremtles.html

Measurement Lesson Plans @ teAchnology
http://www.teach-nology.com/teachers/lesson_plans/math/measurement/
http://www.teach-nology.com/teachers/subject_matter/math/measurement/

Measurement Teaching Theme
http://www.teach-nology.com/themes/math/measure/

Measurement Game
http://www.funbrain.com/cgi-bin/meas.cgi?A1=c&A2=0&A3=0&A4=3&A5=3&A6=5&A7=3&A8=OucA9ntYZyll4oppFTJd45gTT]QJ*bXPm8Hdeep]Q)kyV.''D8NR1
Simple model that shows how things are measured with inches and centimeters.