Help make a lesson clearer

Feedback and corrections

Report a reproducible issue with a lesson, example or expected result.

Contact channel

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Prepare a correction report

Describe the step and what happened in a small practice file. These fields stay on this page while you edit; copying a report does not send it.

Lesson URL

App and version

Platform

Step

Expected result

Observed result

Report to copy

Lesson URL: 
App and version: 
Platform: 
Step: 
Expected result: 
Observed result:

Use invented data in your example. Keep confidential files and personal information out of the report.

What to include

Include the English lesson URL, your Word/Excel/PowerPoint version, Windows/Mac/web platform, the step you followed and the actual result. If a calculation differs, give a small invented input example and the expected value.

For content or rights questions, identify the exact page and material, explain the issue and provide the contact details needed for a reply. Submit sensitive information only through the site’s protected private contact channel.