http://www.mathlearningcenter.org/web-apps/number-rack/
Online Rekenrek. Use the i, the bottom right hand corner of the page, for directions. Try it out. You can make this up to 100 beads and create a cover to screen the beads. You have to use Google Chrome as your browser.
Algebra I alignment to BVSD CEDs and CMP.pdf
The Pioneer Computation Articulation Plan
Iceberg article.pdf