Legal & privacy.

Who we are, what we do with your data (almost nothing), and how you may use our materials.

Legal notice

Hence is published by Lenny Gastineau, Rolle, Switzerland.
Contact: hello@hencemaths.com

Hence is not affiliated with or endorsed by the International Baccalaureate Organization. “International Baccalaureate” and “IB” are trademarks of the International Baccalaureate Organization, used here only to describe the courses our materials are designed for.

Privacy

This website uses no cookies, no analytics and no tracking. Downloading the free sample requires no sign-up and collects no personal data. Our web host may keep standard technical logs (such as IP addresses) for security, for a short period.

When purchases open, payments will be handled by a specialised payment provider acting as the seller of record. It will process the data needed for the sale and invoicing under its own privacy policy; we will receive only what is needed to deliver your files and send corrections.

Terms of use

• Free sample: you may download, print and use it with your students. Please do not republish it elsewhere.
• Student edition: for the personal use of the buyer.
• Teacher edition: may be copied and adapted for use with students in the buyer's own classes.
• Department licence: may be used by all mathematics teachers of one school.
• Reselling, sharing publicly online or uploading to file-sharing sites is not permitted.

Corrections

No corrections have been published yet. Every correction will be listed here with its date, and buyers will receive the updated files automatically.