Contact
Periodic Bubbles is run by one person, so you will get a reply from the person who actually built the thing. I read every message.
Typical reply time is a few days. If you are reporting an error, please include the page address and, if you can, a reference for the correct value so I can check it.
What to write in about
- Mistakes. A wrong number, a typo, a fact that needs a caveat. Corrections are the most useful email I receive.
- Feature ideas. A colour mode you would like, a quiz type, a printable for your class.
- Classroom use. You do not need permission to use the site or print the resources in school, but I am always glad to hear how it is being used.
- Accessibility. If something does not work with your screen reader, keyboard or device, tell me which browser and device you are using.
- Press and partnerships. Happy to talk.
Support the site
Periodic Bubbles is free and always will be. If it has helped you or your class, you can buy me a coffee, or simply share the site with someone who would enjoy it.
Privacy
Emails are used only to reply to you and are not added to any mailing list. See the privacy policy.