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, Enterprise Application Management, OSI Models, User Accounts, Group Policy, Security Management, Operating System Administration, Systems Administration, Virtualization, Cybersecurity
Beginner · Specialization · 3 - 6 Months

University of London
Skills you'll gain: Oral Expression, Public Speaking, Verbal Communication Skills, Assertiveness, Self-Awareness, Communication, Personal Attributes, Composure, Interpersonal Communications, Executive Presence, Emotional Intelligence, Respiration
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Animation and Game Design, Video Game Development, 3D Assets, Event-Driven Programming, Animations, Game Design, Graphics Software, Computer Graphics, Visualization (Computer Graphics), Interactive Design, Computer Graphic Techniques, Debugging, User Interface (UI), User Interface (UI) Design, UI Components, Program Development, Python Programming, Application Design, Development Environment, Development Testing
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Computer Graphics, Visualization (Computer Graphics), Event-Driven Programming, 3D Assets, Computer Graphic Techniques, Application Development, C++ (Programming Language), Software Design, Video Game Development, Microsoft Windows, Maintainability, Software Architecture, Application Lifecycle Management, System Configuration, Image Quality, Performance Tuning, Data Structures, Applied Mathematics, Linear Algebra, Algebra
Beginner · Specialization · 1 - 3 Months

University of Michigan
Skills you'll gain: Instructional Design, Adult Learning Principles, Teaching, Education Software and Technology, Learning Theory, Health Education, Learning Styles, Clinical Practices, Clinical Assessment, Creativity, Technology Strategies
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Consulting, Relationship Management, Business Consulting, Management Consulting, Product Strategy, Technical Consulting, Relationship Building, Project Management, Rapport Building, Consultative Approaches, Project Implementation, Agile Methodology, Company, Product, and Service Knowledge, Waterfall Methodology, Solution Delivery, Enterprise Resource Planning, Systems Thinking, Business Process, Business Transformation, Digital Transformation
Beginner · Course · 1 - 3 Months

Berklee
Skills you'll gain: Music Theory, Music, Musical Composition, Instrumental Music, Music Performance
Mixed · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Performance Metric, Open Mindset, Team Management, Organizational Strategy, Collaboration
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Encryption, Secure Coding, File Management, Cryptography, Python Programming, Programming Principles, Debugging, Scripting, Data Structures
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: HTML and CSS, Responsive Web Design, Cascading Style Sheets (CSS), Bootstrap (Front-End Framework), Web Design, User Interface (UI) Design, Front-End Web Development, Web Development, Typography, Animations
Mixed · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Responsive Web Design, JSON, User Interface (UI) Design, Color Theory, Cascading Style Sheets (CSS), User Interface (UI), HTML and CSS, Hypertext Markup Language (HTML), Restful API, Web Content Accessibility Guidelines, Event-Driven Programming, Web Design, Typography, Web Applications, Application Programming Interface (API), React.js, Web Design and Development, Web Development Tools, Javascript, Web Development
Beginner · Specialization · 3 - 6 Months

Lund University
Skills you'll gain: Sustainable Development, Climate Change Adaptation, Sustainable Design, Sustainable Technologies, Community Development, Governance, Socioeconomics, Water Sustainability, Sustainable Business, Systems Thinking, Environmental Resource Management, Environmental Issue, Environmental Science, Climate Change Mitigation, Case Studies, Water Resources, Multimedia, Business Modeling, Innovation, Stakeholder Engagement
Beginner · Specialization · 3 - 6 Months