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 Cambridge
Skills you'll gain: Human Learning, Psychology, Magnetic Resonance Imaging, Medical Imaging, Neurology, Research Methodologies, Research, Human Development, Learning Theory, Scientific Methods, Child Development
Mixed · Course · 1 - 3 Months

Peking University
Skills you'll gain: Grammar, Vocabulary, Language Competency, Language Learning, Literacy
Intermediate · Course · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Social Justice, Community Development, Governance, Sustainable Development, Systems Thinking, Public Administration, Information Technology, Economic Development, Policty Analysis, Research, and Development, Digital Transformation, Stakeholder Engagement, Case Studies
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Statistical Inference, Statistical Modeling, Statistical Hypothesis Testing, Regression Analysis, R Programming, Data Ethics, Research Design, Statistical Methods, Data Analysis, Statistical Analysis, Data Modeling, Predictive Modeling, Mathematical Modeling, Probability & Statistics, Data Science, Quantitative Research, Machine Learning, Classification And Regression Tree (CART), Linear Algebra, Probability Distribution
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Sapienza University of Rome
Skills you'll gain: Ancient History, 3D Modeling, Public History, Scientific Methods, Data Sharing, Anthropology, Investigation, Cultural Diversity, Case Studies, Art History, Research, Data Management, Data Collection
Mixed · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: Occupational Health, Public Health, Environmental Laws, Environmental Regulations, Health Systems, Environmental Policy, Systems Thinking, Occupational Safety and Health Administration (OSHA), Environmental Science, Epidemiology, Environmental Issue, Environmental Monitoring, Health Policy, Personal protective equipment, Risk Analysis
Beginner · Course · 1 - 4 Weeks

EDHEC Business School
Skills you'll gain: Systems Thinking, Strategic Thinking, Forecasting, Strategic Planning, Strategic Decision-Making, Stakeholder Engagement, Organizational Strategy, Complex Problem Solving, Business Transformation, Business Strategy, Trend Analysis, Innovation, Sustainable Development, Decision Making, Creativity, Emerging Technologies
Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Gmail, Google Docs, Google Sheets, Google Workspace, Calendar Management, Spreadsheet Software, Presentations, File Management, Excel Formulas, Excel Macros, Data Visualization, Setting Appointments, Productivity Software, Version Control, Document Management, Meeting Facilitation, Project Schedules, Collaborative Software, Email Security, Email Automation
Beginner · Specialization · 3 - 6 Months

Skillshare
Skills you'll gain: Video Editing, TikTok, Storytelling, Animations, Timelines, Post-Production, Content Creation, Multimedia, Video Production, Photo/Video Production and Technology, Editing, Productivity, Color Theory, Color Matching, Web Content Accessibility Guidelines, Typography
Beginner · Specialization · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Oral Expression, Human Learning, Education Software and Technology, Technical Communication, Education and Training, Writing, Community Outreach, Learning Theory, Pedagogy, Research, Technical Writing, Scientific Methods, Media and Communications, Science and Research, Persuasive Communication, Program Evaluation, Interviewing Skills, Photography, Infographics, Storytelling
Beginner · Course · 1 - 3 Months

L&T EduTech
Skills you'll gain: Oil and Gas, Petroleum Industry, Hazard Analysis, Safety Standards, Environmental Resource Management, Energy and Utilities, Environment Health And Safety, Environmental Regulations, Big Data, Plant Operations and Management, Waste Minimization, Process Engineering, Chemical Engineering, Risk Analysis, Environmental Engineering, Failure Mode And Effects Analysis, Transportation Operations, Pump Stations, Data Management, Data Processing
Advanced · Specialization · 3 - 6 Months
Amazon Web Services
Skills you'll gain: Amazon CloudWatch, Containerization, Microservices, Docker (Software), Amazon Web Services, Kubernetes, Amazon Elastic Compute Cloud, Application Deployment, Serverless Computing, Devops Tools, System Monitoring, YAML, Scalability
Beginner · Course · 1 - 4 Weeks