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 Washington
Skills you'll gain: GitHub, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Version Control, Git (Version Control System), HTML and CSS, Web Design and Development, Web Development, Front-End Web Development, Web Content Accessibility Guidelines, Cloud Hosting, Debugging, Semantic Web, Web Analytics and SEO, Responsive Web Design
Beginner · Course · 1 - 4 Weeks

Fundação Instituto de Administração
Skills you'll gain: Systems Thinking, Surveys, Innovation, Simulations, Forecasting, Contingency Planning, Strategic Thinking, Process Flow Diagrams, Project Design, Systems Analysis, Corporate Strategy, Strategic Decision-Making, Business Planning, Complex Problem Solving, Business Strategy, Organizational Strategy, Analysis, Verbal Communication Skills, Business Risk Management, Risk Management
Intermediate · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Performance Measurement, Competitive Analysis, Business Modeling, Market Research, Leadership and Management, Operational Analysis, Entrepreneurship, Target Market, Product Development, Systems Thinking, Business Strategies, Technology Strategies, Business Strategy, Organizational Leadership, Market Analysis, Product Management, Leadership, Engineering Management, Engineering
Build toward a degree
Beginner · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: Injury Prevention, Child Welfare, Substance Abuse, Public Health, Public Safety and National Security, Epidemiology, Health Disparities, Community Health, Family Law, Health Policy, Risk Analysis, Program Evaluation, Mental Health, Research
Beginner · Course · 1 - 3 Months

Skills you'll gain: Video Editing, TikTok, Storytelling, Timelines, Content Creation, Multimedia, Photo/Video Production and Technology, Animations, Color Theory, Typography
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Amazon S3, Amazon Web Services, Cloud Hosting, Version Control, Application Deployment, Cloud Storage, Web Design and Development, Public Cloud
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: AWS Identity and Access Management (IAM), Amazon CloudWatch, Threat Detection, Threat Management, Amazon Web Services, Incident Response, Continuous Monitoring, Cloud Security, Identity and Access Management, Amazon Elastic Compute Cloud, Network Security, Event Monitoring
Intermediate · Course · 1 - 4 Weeks
Curtis Institute of Music
Skills you'll gain: Classical Music, Music Theory, Musical Composition, Music History, Music Performance
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Canva (Software), Instagram, Social Media Content, Graphic Design, Graphic and Visual Design, Social Media Marketing, Organizational Skills, Marketing Design, Typography, Color Theory, Business Strategy
Beginner · Guided Project · Less Than 2 Hours

Whizlabs
Skills you'll gain: Microsoft Azure, Role-Based Access Control (RBAC), Cloud Storage, Identity and Access Management, Cloud Management, Data Management, Data Security, Data Governance, Data Encryption Standard
Intermediate · Course · 1 - 4 Weeks

Kotter
Skills you'll gain: Organizational Change, Change Management, Business Transformation, Leadership and Management, Organizational Structure, Organizational Leadership, People Management, Industrial and Organizational Psychology, Leadership Development, Leadership, Drive Engagement, Stakeholder Engagement, Diversity and Inclusion, Lifelong Learning
Beginner · Course · 1 - 4 Weeks

Universidad de los Andes
Skills you'll gain: Governance, Business Leadership, Business Management, Leadership and Management, Strategic Leadership, Business, Organizational Development, Succession Planning, Corporate Strategy, Business Continuity, Business Strategies, Business Valuation, Leadership, Entrepreneurship, Innovation, Value Propositions, Systems Thinking, Case Studies
Intermediate · Course · 1 - 3 Months