Number theory courses can help you learn prime numbers, divisibility rules, modular arithmetic, and integer properties. You can build skills in problem-solving, logical reasoning, and algorithmic thinking, that support tackling complex mathematical challenges. Many courses introduce tools like Python for implementing algorithms and mathematical software for exploring number patterns, enabling you to apply your knowledge in practical situations such as cryptography and coding theory.

University of Maryland, College Park
Skills you'll gain: Health Informatics, Public Health, Health Policy, Professional Development, Cultural Diversity, Health Care Administration, Clinical Leadership, Crisis Intervention, Informatics, Health Care, Leadership, Health Systems, Health Disparities, Diversity Equity and Inclusion Initiatives, Data Integration, Community Health, Emergency Response, Health Technology, Adaptability, Data Analysis
Beginner · Specialization · 3 - 6 Months

California Institute of the Arts
Skills you'll gain: Graphic Design, Typography, Graphic and Visual Design Software, Adobe Creative Cloud, Design Elements And Principles, Adobe Photoshop, Adobe Illustrator, Design Software, Color Theory, Layout Design, Image Quality, Creativity
Beginner · Course · 1 - 4 Weeks

University of Leeds
Skills you'll gain: Test Case, Software Testing, Software Quality Assurance, Quality Assurance, User Acceptance Testing (UAT), Test Planning, Verification And Validation, Acceptance Testing, System Testing, White-Box Testing, Unit Testing, Functional Testing, Integration Testing, Software Development Life Cycle, Software Development
Beginner · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Cloud Computing, Cloud Computing Architecture, Cloud Services, Threat Modeling, Application Security, Network Security, Infrastructure As A Service (IaaS), Enterprise Architecture, Platform As A Service (PaaS), Identity and Access Management, Disaster Recovery
Intermediate · Course · 3 - 6 Months

Coursera
Skills you'll gain: Scrum (Software Development), Team Building, Team Management, Backlogs, Agile Project Management, Agile Methodology, Sprint Retrospectives, Team Leadership, Sprint Planning, User Story, Cross-Functional Collaboration, Case Studies, Project Management, Resilience
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Employee Coaching, Strategic Leadership, Succession Planning, Leadership Development, Leadership and Management, Mentorship, Coaching, Professional Development, People Management, Leadership, Decision Making, Performance Management, Organizational Strategy
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Bootstrap (Front-End Framework), Responsive Web Design, Web Design and Development, HTML and CSS, Web Design, UI Components
Beginner · Course · 1 - 4 Weeks

Alex Genadinik
Skills you'll gain: Decision Making, Active Listening, Empathy, Strategic Decision-Making, Non-Verbal Communication, Conflict Management, Leadership Development, Leadership, Meeting Facilitation, Creativity, Cultural Sensitivity, Empathy & Emotional Intelligence, Data-Driven Decision-Making, Emotional Intelligence, Business Leadership, Leadership Studies, Leadership and Management, Strategic Leadership, Organizational Leadership, Team Leadership
Beginner · Specialization · 3 - 6 Months

University of London
Skills you'll gain: Learning Theory, Teaching, Human Learning, Pedagogy, Education and Training, Higher Education, Social Sciences, Policy Analysis
Mixed · Course · 1 - 3 Months

Skills you'll gain: Occupational Safety and Health Administration (OSHA), Occupational Safety And Health, Internal Auditing, Safety Training, Emergency Response, Safety Culture, Occupational Health, Safety Audits, Job Safety Analysis, Risk Control, Risk Management, Hazard Communication (HazCom), Regulatory Compliance, Continuous Quality Improvement (CQI), Organizational Development, Document Management
Beginner · Course · 3 - 6 Months

Skills you'll gain: Delegation Skills, Technical Management, Time Management, Relationship Building, Team Management, Organizational Leadership, Leadership and Management, Leadership, Communication, Prioritization, Expectation Management, Employee Engagement, Goal Setting
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Strategic Communication, Performance Measurement, Key Performance Indicators (KPIs), Communication Planning, Strategic Leadership, Employee Engagement, Business Planning, Strategic Planning, Dashboard, Meeting Facilitation, Goal Setting, Planning, Organizational Strategy, Discussion Facilitation, Stakeholder Engagement, Presentations, Business Strategy, Leadership Development, Team Building, Teamwork
Intermediate · Course · 1 - 3 Months