Terms & Conditions

1. About the Service

STEM hey (stemhey.com) offers free interactive lessons in mathematics and other STEM subjects. The service is provided by Calcubo.

2. Email Communication

By registering you agree to receive:

• Free STEM learning materials and lessons
• News and updates on mathematics and science topics
• Information about private and group lessons if relevant to you
• Information about Calcubo.com services

3. Data Protection

We only store your email address and optionally your class number.
Your data is never sold to third parties.
All data is processed in accordance with GDPR.

4. Unsubscribing

You can unsubscribe from our emails at any time by clicking
the unsubscribe link in any of our emails.

5. Contact Us

If you have any questions, please write to: hey@calcubo.com