Let's talk.
Whether you're booking a workshop, asking about a partnership, or just want to share how Numberbender helped you — Dr. E personally reads every message.
Frequently asked
The questions Dr. E hears most often.
Are the courses really free?
Yes — every course playlist is free on YouTube. Numberbender Inc. is a 501(c)(3) nonprofit, so the mission is access first.
How do I book a workshop?
Use the contact form and select "Speaking / Workshop Inquiry." Include your event date, audience size, and topic of interest.
Can you customize a session?
Absolutely. Every keynote, workshop, and faculty development series is tailored to your audience and goals.
Do you do virtual sessions?
Yes — Dr. E delivers both in-person and virtual sessions. Many institutions opt for hybrid faculty development cohorts.
Join our research community
Your answers help Dr. E understand how students and educators access math resources — and shape future content, workshops, and research.
10 printable PDFs with answer keys — plus weekly tips from Dr. E. No spam.