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- Go to the course in question
- Turn editing on
- Click on the "Edit summary" icon in the first topic (usually represented by a cogwheel)
- Click on "Edit selection"
- Expand the "Restrict Accessaccess" section of the topic summary
- Specify the following restrictions:
- User field: Language is equal to en
- Before section can be accessed: Hide section completely
- Click on "Add restriction..."
- Choose "Language" from dialog box
- Specify the Language by choosing "English (en)" in the drop down.
- Click on the "Save changes" button at the bottom of the page
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If you follow the same steps as above with the second topic but set the restriction "User field: Language is equal to "Français (fr)" (or "Français - Canada (fr_ca depending )" depending on your specific locale), then you will be able to place your French content in the second topic.
Note that you can have as many topics as you want, each with their own restrictions. You can also place the restriction on each activity if you prefer (rather than on the entire topic). Restricting the entire topic however is generally simpler to manage and less error prone.
Warning: Restrict access by language is only available when at least two language packs are installed.