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 Boulder
Skills you'll gain: Operations Research, Algorithms, Graph Theory, Linear Algebra, Combinatorics, Computational Thinking, Mathematical Modeling, Theoretical Computer Science, Python Programming
Build toward a degree
Advanced · Course · 1 - 4 Weeks

University of Cape Town
Skills you'll gain: Informed Consent, Healthcare Ethics, Scientific Methods, Intensive Care Medicine, Diagnostic Tests, Patient Education And Counseling, Cultural Diversity, Critical Care, Ethical Standards And Conduct, Cultural Sensitivity, Patient Communication
Intermediate · Course · 1 - 4 Weeks

Commonwealth Education Trust
Skills you'll gain: Student Engagement, Teaching, Pedagogy, Classroom Management, Human Learning, Working With Children, Child Development, Learning Theory, Differentiated Instruction, Parent Communication, Cultural Diversity, Substance Abuse
Mixed · Course · 1 - 3 Months

Skills you'll gain: Game Theory, Strategic Decision-Making, Strategic Thinking, Decision Making, Systems Thinking, Complex Problem Solving, Spreadsheet Software
Intermediate · Guided Project · Less Than 2 Hours
University of Illinois Urbana-Champaign
Skills you'll gain: Application Specific Integrated Circuits, Hardware Design, Computer-Aided Design, Systems Design, Computer Architecture, Network Routing, Computational Logic, Electrical Engineering, Data Structures, Algorithms, Graph Theory, Mathematical Modeling, Calculus
Intermediate · Course · 1 - 3 Months

University of Washington
Skills you'll gain: Text Mining, Data Visualization Software, Correlation Analysis, Statistical Analysis, Data Analysis, Analytics, Data Collection, Social Network Analysis, Unstructured Data, R Programming, Regression Analysis, Application Programming Interface (API), Trend Analysis, Python Programming
Intermediate · Course · 1 - 4 Weeks

Curtis Institute of Music
Skills you'll gain: Musical Composition, Music History, Instrumental Music, Classical Music, Music Theory, Music Performance
Mixed · Course · 1 - 3 Months

University of Pennsylvania
Skills you'll gain: Human Capital, Employee Retention, Workforce Development, Human Resource Strategy, Employee Training, Digital Transformation, Organizational Strategy, Employee Engagement, Supply Chain Management, Human Resources Management and Planning, E-Commerce, Customer experience strategy (CX), Brand Strategy, Analytics, Talent Management, Retail Store Operations, Marketing Strategies, Business Technologies, Customer Insights, Performance Management
Beginner · Specialization · 1 - 3 Months

Tecnológico de Monterrey
Skills you'll gain: Critical Thinking, Independent Thinking, Influencing, Persuasive Communication, Organizational Leadership, Self-Awareness, Decision Making, Leadership, Industrial and Organizational Psychology, Leadership and Management, Team Motivation, Leadership Development, Emotional Intelligence, Personal Development, Organizational Effectiveness, Business Leadership, Resilience, Strategic Decision-Making, Systems Thinking, Complex Problem Solving
Advanced · Specialization · 1 - 3 Months

Skills you'll gain: Color Theory, Layout Design, Typography, Adobe Photoshop, Photo Editing, Graphic and Visual Design, Design Elements And Principles, Design, Graphic Design, Image Quality
Beginner · Course · 1 - 4 Weeks

University of Washington
Skills you'll gain: Ruby (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, Computer Programming, Programming Principles, Functional Design, Computational Thinking, Software Design Patterns, Theoretical Computer Science, Computer Science, Debugging
Mixed · Course · 1 - 3 Months

University of Western Australia
Skills you'll gain: Land Management, Economics, Water Resources, Natural Resource Management, Environmental Resource Management, Environmental Policy, Supply And Demand, Cost Benefit Analysis, Policy Analysis, Climate Change Adaptation, Market Dynamics
Beginner · Course · 1 - 3 Months