Science Tools

Ruler:
http://iruler.net/

Scientific Calculator:
https://www.desmos.com/calculator

Scales:
http://www.technologyrocksseriously.com/2010/11/online-balance-scales.html#.VcqYnflViko


Measurement intro:

             http://water.me.vccs.edu/courses/env211/lesson4_2.htm

http://pureflix.com/videos/363629635520/watch

Or on Pure Flix look for:

Grade Science Experiments

Season 1, Ep. 5
Lifepac: Science Experiments

This episode is abt measurement

Measure Liquids:

https://www.youtube.com/watch?v=5Jbkk6ndivM

https://www.youtube.com/watch?v=9tpu_gzpbg8