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.

Johns Hopkins University
Skills you'll gain: Linear Algebra, Artificial Intelligence and Machine Learning (AI/ML), Numerical Analysis, Geometry, Applied Mathematics, Mathematical Modeling
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Problem Solving, Computational Thinking, Probability, Mathematical Modeling, Deductive Reasoning, Behavioral Economics, Algorithms, Analytical Skills, Theoretical Computer Science
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Feature Engineering, Exploratory Data Analysis, Pandas (Python Package), Scikit Learn (Machine Learning Library), Data Manipulation, NumPy, Data Analysis, Python Programming, Regression Analysis, Predictive Modeling, Machine Learning, Classification And Regression Tree (CART), Data Science, Statistical Hypothesis Testing, Supervised Learning, Statistical Methods, Programming Principles, Data Structures
Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Front-End Web Development, Debugging, Programming Principles, Computational Thinking, GitHub, Pseudocode, Version Control, Git (Version Control System), Integrated Development Environments, Microsoft Copilot, Algorithms, Program Development, Computer Programming, Web Development, C# (Programming Language), Software Engineering, Data Structures
Beginner · Course · 1 - 3 Months

University of Copenhagen
Skills you'll gain: Gerontology, Competitive Analysis, Design Thinking, Demography, Innovation, Rehabilitation, Intellectual Property, Health Technology, Chronic Diseases, Health Systems, Health Care, Value Propositions, Business Modeling, Business Strategy, Project Management
Intermediate · Course · 1 - 3 Months

The Pennsylvania State University
Skills you'll gain: Geographic Information Systems, Case Studies, Climate Change Programs, Systems Thinking, Design Thinking, Geospatial Information and Technology, Sustainable Design, Spatial Analysis, Collaborative Software, Decision Support Systems, Cultural Responsiveness
Beginner · Course · 1 - 3 Months

University of Amsterdam
Skills you'll gain: Innovation, Systems Thinking, Storytelling, Transportation Operations, Critical Thinking, Sustainable Systems, Policy Analysis, Cultural Diversity, Sociology, Economics
Intermediate · Course · 1 - 3 Months

University of California, Davis
Skills you'll gain: Color Theory, Typography, Cascading Style Sheets (CSS), Web Content Accessibility Guidelines, Web Design, HTML and CSS, Animations, User Interface (UI) Design, Web Design and Development, Visualization (Computer Graphics)
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Crisis Management, Business Ethics, Data Ethics, Media Relations, Communication Strategies, Public Relations, Strategic Communication, Stakeholder Communications, Business Communication, Communication, Diversity and Inclusion, Risk Management, Leadership and Management, Social Media Strategy, Business Strategy, Marketing
Beginner · Course · 1 - 3 Months

Politecnico di Milano
Skills you'll gain: Public Health and Disease Prevention, Public Health, Environmental Science, Infectious Diseases, Preventative Care, Health Policy, Health Care Procedure and Regulation, Policty Analysis, Research, and Development, Climate Change Adaptation, Governance, Food Safety and Sanitation, Law, Regulation, and Compliance, Case Studies
Intermediate · Course · 1 - 3 Months

University of California, Santa Cruz
Skills you'll gain: Research, Storytelling, Systems Thinking, Content Creation, Peer Review, Political Sciences, Social Sciences, Discussion Facilitation, World History
Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Persuasive Communication, Leadership, Influencing, Strategic Leadership, Organizational Leadership, Leadership Development, Business Leadership, Leadership and Management, Team Leadership, Communication, Agile Project Management, Decision Making
Beginner · Course · 1 - 4 Weeks