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 Colorado System
Skills you'll gain: Windows Servers, Computer Security, Linux Administration, Contingency Planning, Disaster Recovery, Authorization (Computing), Linux, Linux Servers, Microsoft Windows, Authentications, Business Continuity Planning, OSI Models, User Accounts, Group Policy, Security Management, Microsoft Servers, Operating System Administration, Systems Administration, Virtualization, Cybersecurity
Beginner Ā· Specialization Ā· 3 - 6 Months

Universidad de los Andes
Skills you'll gain: Health Education, Community Health, Education and Training, Advocacy, Family Support, Media and Communications, Working With Children, Curriculum Development, Child Development, Diversity Equity and Inclusion Initiatives, Social Network Analysis
Intermediate Ā· Course Ā· 1 - 3 Months

Vanderbilt University
Skills you'll gain: Claude Code, Prompt Engineering, Multimodal Prompts, Version Control, AI Workflows, Generative AI Agents, Git (Version Control System), AI Orchestration, Quality Assurance, Generative AI, Software Quality Assurance, Software Development, Software Documentation, Artificial Intelligence, Software Development Life Cycle, Software Architecture, Automation, Software Testing, Software Design, Software Development Methodologies
Beginner Ā· Course Ā· 1 - 3 Months

University of Pennsylvania
Skills you'll gain: Social Network Analysis, Network Analysis, Social Sciences, Sociology, Systems Thinking, Economics, Policy, and Social Studies, Simulations, Culture, Graph Theory, Complex Problem Solving, Innovation
Beginner Ā· Course Ā· 1 - 3 Months

UniversitĆ Bocconi
Skills you'll gain: Human Capital, Governance, Sustainable Development, International Relations, Strategic Thinking, Human Resources, Cultural Diversity, International Finance, Policy Development, Stakeholder Management, Strategic Partnership
Mixed Ā· Course Ā· 1 - 3 Months

Duke University
Skills you'll gain: Child Development, Advocacy, Research, Research Methodologies, Social Sciences, Data Collection, Social Network Analysis, Anthropology, Human Development, Nutrition and Diet, Environmental Issue, Biology
Beginner Ā· Course Ā· 1 - 3 Months

Skills you'll gain: Stakeholder Engagement, Resource Management, Stakeholder Management, Project Schedules, Project Management Institute (PMI) Methodology, Negotiation, Project Management, Leadership and Management, Leadership, Scheduling, Team Leadership, Emotional Intelligence, Communication Planning, Communication
Intermediate Ā· Course Ā· 1 - 3 Months

University of Copenhagen
Skills you'll gain: Sustainable Development, Sustainable Systems, Water Sustainability, Waste Minimization, Social Impact, Supply Chain, Systems Thinking, Climate Change Mitigation, Land Management, Environmental Science, Innovation, Nutrition and Diet, Case Studies
Beginner Ā· Course Ā· 1 - 3 Months

Skills you'll gain: Color Theory, User Interface and User Experience (UI/UX) Design, Logo Design, Typography, Interaction Design, Figma (Design Software), Adobe Illustrator, Wireframing, Marketing Materials, Marketing Design, Layout Design, Usability, Web Content Accessibility Guidelines, Graphic Design, User Centered Design, Photo Editing, Peer Review, Adobe Firefly, Game Design, Adobe Photoshop
Beginner Ā· Professional Certificate Ā· 3 - 6 Months

University of Alberta
Skills you'll gain: Physics, Storytelling, Scientific Methods, Science and Research, General Science and Research, Simulations, Systems Of Measurement, Scientific Visualization
Beginner Ā· Course Ā· 1 - 3 Months

Universidade de SĆ£o Paulo
Skills you'll gain: Conflict Management, Stakeholder Management, Project Planning, Project Documentation, Project Management, Organizational Structure, Project Scoping, Leadership and Management, Influencing, Communication
Beginner Ā· Course Ā· 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Systems Thinking, Epidemiology, Systems Analysis, Social Network Analysis, Simulations, Health Disparities, Network Analysis, Public Health, Policy Analysis, Social Determinants Of Health, Behavioral Health, Economics, Software Installation
Beginner Ā· Course Ā· 1 - 4 Weeks