UMES Extension hosts 4-H STEM programs for youth on the Eastern Shore of Maryland, offering them a chance to learn through hands-on projects.

Our experienced team of specialists work with Eastern Shore schools and local organizations, among others, to equip young people with the skills to succeed in scientific careers.

In addition to creating STEM programs at the University of Maryland Eastern Shore, we encourage local organizations and schools to request any member of our team to deliver lessons at their events and in their classrooms. 

What Is 4-H STEM

The University of Maryland Eastern Shore Extension 4-H Youth Development program is a part of the Extension System of the United States Department of Agriculture and land-grant universities. The program is offered in partnership with the National 4-H Council

Our 4-H STEM programs range from animal, plant and human sciences to robotics, engineering and computer technology. Through these programs, youth, ages 5-18, see first hand how they can make an impact locally and in the world through the wonders of science.

The programs spark youth imaginations and long-lasting passions for STEM to encourage their pursuit of science careers and become the next generation of scientists and knowledgeable workforce and consumers.

How We Can Help

  • In-school enrichment lessons
  • After-school program enrichment lessons
  • Workshops and short-term experiences (ex: day camps)
  • Professional development for educators and teen counselors
  • STEM curriculum training for educators
  • Consultations on new program designs
  • Support for program evaluations and research projects
  • Equipment, curriculum booklets and other resources

To request help from our staff, contact the person on our team who best matches your needs directly or contact Ariel Clay at amclay@umes.edu or 410-651-7256.

4-H STEM Mobile Lab


The University of Maryland Eastern Shore Extension’s 4-H STEM Mobile Lab made its debut in August 2025 appearing at local county fairs and events on the Eastern Shore of Maryland. The lab will be used to provide a flexible and more robust curriculum to youth in local schools. For more information, contact Ariel Clay at amclay@umes.edu. (Photo by Todd Dudek, UMES Ag Communications)

Our Signature Programs

From the annual STEM Expo to a new student internship program, the University of Maryland Eastern Shore Extension 4-H team hosts several special programs each year for youth on the Eastern Shore of Maryland.

STEM Expo


The University of Maryland Eastern Shore Extension holds an annual 4-H STEM Expo on the campus in Princess Anne geared toward youth ages 5-18. The Expo shares educational opportunities and programs that the university and community partners have to offer. Contact: Brad Hartle at bhartle@umes.edu

Student Internships


This new yearlong internship program connects local high school students with University of Maryland Eastern Shore faculty to learn valuable skills while conducting meaningful research projects. Cohorts run from October to August each year, with applications opening each spring. Contact: Ariel Clay at amclay@umes.edu

AgVenture


The University of Maryland Eastern Shore’s 4-H Extension teams hosts the annual AgVenture program, bringing hundreds of elementary school students to the university’s Research, Extension and Teaching Farm. The students take part in hands-on activities aimed at getting them excited about agriculture as a future career. Contact: Ariel Clay at amclay@umes.edu

Maryland Youth Institute World Food Prize


The University of Maryland Eastern Shore hosts the Maryland Youth Institute where high school participants engage with local leaders and agriculture experts on critical global challenges, and research an issue related to food security. Students who participate in the Maryland Youth Institute earn recognition as a Borlaug Scholar and become eligible to be invited as a student delegate to attend the Global Youth Institute held each October in Des Moines, Iowa. The institute is part of the World Food Prize Foundation. Contact Diamond Nwazae at dcnwazae@umes.edu or Theresa Maggio at temaggio1@umes.edu

Our Impact

UMES 4-H STEM Expo 2025

  • Jackson Handy, 5, of Princess Anne uses a telescope during the 2025 UMES 4-H STEM Expo.

Meet Our Team

Ariel Clay

4-H STEM Youth Development Specialist
Phone: 410-651-7256
Email: amclay@umes.edu

Specialties and Ready-to-Go Lessons

Educator Development

  • 4-H Staff
  • Youth-Serving Volunteers 
  • School Teachers
  • After-school Program Staff 
  • Teens-as-Teachers

Curriculum Development 

Program Design & Evaluation


Brad Hartle

4-H STEM Senior Agent Associate
Phone: 410-651-6729
Email: bhartle@umes.edu

Specialties & Ready-to-Go Lessons:

  • Marine Science 
  • Climate Science 
  • Environmental Science 
  • Conservation 
  • Navigation 
  • Engineering Challenges 
  • Forensics
  • Geology & Soil Science 
  • Physics Concepts

Jeremiah Mowen

4-H STEM Agent Associate
Phone: 410-651-6734
Email: jlmowen@umes.edu

Specialties & Ready-to-Go Lessons:

Robotics

  • LEGO WeDos 
  • VEX (IQ & EDR) 
  • Mindstorms
  • FTC

Rocketry

Coding & Programming

  • Scratch 
  • Python

Engineering

Forestry

  • Pacing and Orienteering 
  • Dendrology
  • Tree Measurement
  • Forest Health Evaluation

Junior Master Gardener

Drone (UAS) Operation


Diamond Nwaeze

4-H STEM Agent Associate
Phone: 410-651-6727
Email:  dcnwaeze@umes.edu

Specialties & Ready-to-Go Lessons:

Agriculture & Horticulture

  • Plant Basics
  • Parts of a Seed
  • All About Basil
  • All About Figs
  • Making Field Guides
  • Community Gardening

College & Career Readiness

  • Searching for Scholarships 
  • Email Etiquette
  • Navigating Pre-College Programs
  • Majors & Areas of Study: What is best for you?

Theresa E. Maggio

4-H STEM Educator and Extension Associate
Phone: 410-621-3099
Email: temaggio1@umes.edu

Specialties & Ready-to-Go Lessons

Career Readiness

  • Resume Bootcamp
  • Mock Interviews
  • Career Services
  • Soft Skills Minute to Win It Challenge

Pollinators

  • Installing Pollinator Gardens
  • Save the Bees
  • Mason Bees
  • Maryland’s Pollinators

Agriculture

  • How to Grow Plants
  • Planning Community Gardens
  • Seed Bombs (seed balls for planting)
  • Jr. Master Gardener

STEM Lessons

  • Mars Base Camp
  • Power Protectors (renewable energy program)
  • Plantable Paper

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