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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.

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Quick answers

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.

🇵🇭 Open math education for every Filipino learner

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Numberbender is free and stays free — 1,600+ YouTube videos and 569 worksheets, no accounts, no paywall, no ads. Join the list and you help keep it that way: your answers show me who is being left out, and where to build next.

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🎁 Free math resources from Dr. E

Join the list and Dr. E will email you when new lessons and worksheets are ready. Every worksheet is already free — download the bundles here. No spam.

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