Meet Our Team
At STEM Scholars Hub, our team is dedicated to helping students across the United States explore, learn, and thrive in STEM.
Led by our Founder, who guides the overall vision and curriculum, our team of certified volunteer educators provides online guided learning sessions tailored to each student. These volunteers bring passion, expertise, and creativity to every virtual session, inspiring curiosity, building confidence, and supporting students to reach their full potential.
Through interactive online tutoring, personalized guidance, and STEM-focused projects, our team contributes to a dynamic, collaborative, and inspiring learning community, helping U.S. students access the tools, knowledge, and support they need to grow and succeed in science, technology, engineering, and mathematics — all from the comfort of home.
John Mark L. Barbado, M.Ed.
Founder — STEM Scholars Hub
STEM Teacher, Elementary and Middle School
New Springs Schools — Tampa, Florida, USA
Certified Professional Educator, State of Florida
Certified Professional Educator, State of New Mexico
Area of Expertise: General and STEM Education
Mr. Barbado serves as the Founder and instructional lead of STEM Scholars Hub. He guides the organization’s academic vision, curriculum alignment, and program development to ensure structured, standards-based STEM instruction for learners nationwide.
His mission is to strengthen students’ foundational and advanced STEM competencies, expand access to guided academic support, and contribute to the long-term development of a scientifically and mathematically proficient student population across the United States. Through coordinated online instruction, educator collaboration, and resource development, he fosters intellectual curiosity, analytical reasoning, and academic confidence in students at multiple grade levels.
STEM Scholars Hub is supported by a team of licensed educators representing multiple states and grade levels. Each volunteer contributes subject-matter expertise and classroom experience to ensure instructional rigor, continuity, and vertical alignment across elementary, middle, and secondary education. Meet our volunteers below to see the amazing educators who make these learning experiences possible and click the button to start your free online guided session today!
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Joanne M. Walker
Volunteer Educator
General Education Teacher
New Springs Schools — Florida
Certified Teacher, State of Florida
Area of Expertise: Science and Mathematics
Ms. Walker provides cross-grade instructional expertise in mathematics and science, reinforcing conceptual understanding, computational fluency, and scientific reasoning through structured and standards-aligned guided sessions.
Lodelin G. Nufable
Volunteer Educator
Science Teacher
Chamberlain High School — Florida
Certified Secondary Educator, State of Florida
Area of Expertise: General Science
Ms. Nufable specializes in secondary science instruction, supporting students in mastering core scientific principles, analytical thinking, and applied inquiry practices essential for STEM advancement.
Cheryl L. Matic
Volunteer Educator
Elementary School Teacher
New Springs Schools — Florida
Certified Educator, State of Florida
Area of Expertise: Science and Mathematics
Ms. Matic supports early STEM development by strengthening foundational numeracy and scientific literacy skills, ensuring students build the competencies necessary for future academic progression.
Maureen Joy Magbag, MAEd - Mathematics
Volunteer Educator
Middle School Mathematics Teacher (Algebra, Pre-Algebra)
Stewart Middle Magnet School — Florida (Hillsborough County Public Schools)
Certified Secondary Mathematics Educator, State of Florida
Area of Expertise: Mathematics
Ms. Magbag specializes in middle school mathematics, including Algebra and Pre-Algebra. She supports students in mastering foundational mathematical reasoning, preparing them for advanced coursework and long-term STEM pathways.
Neil Grace Ancao
Volunteer Educator
General Education Teacher
West Boron Elementary School — California
Certified Educator, State of California
Area of Expertise: General Elementary Education
Mrs. Ancao supports elementary learners in developing academic fundamentals essential for future STEM success. Her instructional experience focuses on strengthening early numeracy, problem-solving, and integrated science learning.
Janet Consumo
Volunteer Educator
General Education Teacher
BridgePrep Academy — Florida
Certified Elementary Educator, State of Florida
Area of Expertise: Science, Mathematics, and English Language Arts
Mrs. Consumo brings interdisciplinary expertise, integrating literacy skills with STEM instruction to strengthen comprehension and problem-solving. Her background supports holistic academic development while reinforcing core science and mathematics skills.
Djulerie Zephir
Volunteer Educator
Team Leader – Science Department
New Springs Schools — Florida
Certified Middle School Teacher, State of Florida
Area of Expertise: Science and Engineering
Ms. Zephir serves as Science Department Team Lead, supporting instructional coordination in middle school science and engineering. She helps ensure that guided sessions promote inquiry-based learning, critical analysis, and conceptual mastery aligned with STEM standards.
Mark Vincent O. Sosas
Volunteer Educator
Team Leader – Algebra and Pre-Algebra
Middle School Mathematics Teacher
Stewart Middle Magnet School — Florida
Certified Teacher, State of Florida
Area of Expertise: Mathematics
Mr. Sosas serves as a mathematics educator with leadership experience in Algebra and Pre-Algebra instruction at the middle school level. Through his volunteer engagement with STEM Scholars Hub, he supports students in strengthening algebraic reasoning, procedural fluency, and conceptual understanding aligned with state mathematics standards. His expertise contributes to reinforcing structured mathematical progression essential for long-term STEM readiness.
JENNIFER CORTEZ
Volunteer Educator
ESE Elementary Teacher
Woodmont Charter School — Florida
Certified Educator, State of Florida
Area of Expertise: Elementary Math & Science
Ms. Cortez provides specialized instructional expertise in elementary mathematics and science, supporting students with ESE needs. She reinforces conceptual understanding, computational fluency, and scientific reasoning through structured, standards-aligned guided sessions.
STEM Scholars Hub empowers students across the United States to explore, question, and discover the wonders of STEM. Be a part of this incredible journey and help us build a brighter, more innovative future, one curious mind at a time.
- The STEM Scholars Hub Team -