Numberbender

For Educators · Teaching Methodology

Teach the Math — Dr. E's way.

For teachers who want math that actually sticks. Watch how Dr. E teaches each topic in a real classroom — the pacing, the board work, the questions that land — then borrow it for your own lessons, or assign it as the flip. Bilingual in English and Filipino. Free for every educator, everywhere.

Backed by a peer-reviewed RCT, 340K+ YouTube subscribers, and an Apple Distinguished Educator badge.

22 English videos 23 Filipino videos 23 topics covered 6 subject areas 100% free · no login
📦 Get Free Worksheet Bundles
Dr. Peter Esperanza — math educator and teaching methodology
🔢 Algebra ∫ Calculus 📐 Trig 📊 Statistics 📈 Precalculus ⬛ Linear Algebra
🔢 Algebra 5 topics
∫ Calculus 6 topics
📐 Trigonometry 1 topic
📊 Statistics 4 topics
📈 Precalculus 4 topics
⬛ Linear Algebra 2 topics
🔢 Algebra 5 topics
∫ Calculus 6 topics
📐 Trigonometry 2 topics
📊 Statistics 4 topics
📈 Precalculus 4 topics
⬛ Linear Algebra 2 topics
🧰 Your Flip Kit

One topic. Three ready-to-use pieces.

Every model lesson connects to a complete teaching package — so you can flip a unit this week without building anything from scratch.

1

Watch how to teach it

See Dr. E model the topic in a real classroom — pacing, board work, and the questions that land.

2

Assign the student lesson

Hand students the matching bilingual lesson from the student course library →

3

Print the worksheet

Pair it with the free worksheet — browse all worksheets →

Bring Dr. E to your school.

Workshops, keynotes, and ongoing faculty development on the flipped classroom, bilingual math instruction, and teaching that engages. In-person or online, for departments and whole institutions.

See workshops & keynotes → Invite Dr. E →

Every lesson pairs with a free student worksheet.

Download, print, and assign — no signup, no paywall. Built for every classroom.

📝 Browse all worksheets → 📚 Student course library