CPM Teacher Tutorials

Mathcasts: Videos Do Not Play

Updated Sep 20, 2021

This article describes three trouble shooting ideas to get the Mathcasts to play.

Firefox:  Copy the link from the error page.  Paste it in the browser.  Check to see if it plays.

2. Still not working? Download the latest version of Quicktime. In Firefox:

  • Go to Tools --> Add-ons.
  • Under Plugins, get Quicktime Plug-In 7.7.4 (or the latest version).
  • Activate.
  • Repeat step 1 if necessary.
Still not working? Download the latest version of Quicktime. In Firefox:
  • Go to File -->Open Stream.
  • Paste the URL in the Open Stream window.
  • Play the mathcast!
If step 1 and 2 above did not work, open the link in iTunes.   Open iTunes:
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