There is currently an issue with Google Chrome not opening the Active Teach resources correctly. You can use Internet Explorer without an issue however there is a workaround.
- Click the link to open the relevant Active Teach resource
- Hover over the Google Chrome icon
until the available windows pop up. - Right click on the window that should contain the Active Teach content.
- Click on Display in tab and the content will appear.
Hopefully this issue will be addressed in a future update.