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.

Yonsei University
Skills you'll gain: Political Sciences, Social Studies, Policy Analysis, Economic Development, Social Sciences, International Relations, Diplomacy, Economics, Governance
Beginner · Course · 1 - 3 Months

ESSEC Business School
Skills you'll gain: Revenue Management, Forecasting, Budgeting, Hospitality, Financial Forecasting, Hotel Operations, Strategic Marketing, Target Market, Market Dynamics, Consumer Behaviour, Competitive Analysis, Data-Driven Decision-Making
Mixed · Course · 1 - 4 Weeks

Technical University of Denmark (DTU)
Skills you'll gain: Environmental Regulations, Environmental Laws, Environment, Environmental Policy, Environmental Management Systems, Ethical Standards And Conduct, Systems Thinking, Law, Regulation, and Compliance, Cost Benefit Analysis, Case Studies
Mixed · Course · 1 - 3 Months

Skills you'll gain: Purchasing, Workflow Management, Business Workflow Analysis, Supplier Relationship Management, Internal Communications, Systems Thinking, Process Mapping, Operational Efficiency, Contract Management, Supplier Management, Proposal Writing, Negotiation, Strategic Thinking, Team Leadership, AI Enablement, Leadership, Operations Management, Communication, Business, Team Management
Beginner · Specialization · 1 - 3 Months

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

Skills you'll gain: Field-Programmable Gate Array (FPGA), Application Specific Integrated Circuits, Computational Logic, Computer Architecture, Hardware Design, Electronic Hardware, Electronics Engineering, Electronics, Theoretical Computer Science, Programmable Logic Controllers, Microarchitecture, Electronic Systems, Semiconductors, Electronic Components, Data Storage, Data Storage Technologies
Intermediate · Course · 1 - 4 Weeks
Stanford University
Skills you'll gain: Bayesian Network, Applied Machine Learning, Machine Learning Algorithms, Bayesian Statistics, Markov Model, Machine Learning, Statistical Modeling, Probability Distribution, Statistical Methods, Algorithms, Model Evaluation
Advanced · Course · 1 - 3 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Portfolio Management, Time Series Analysis and Forecasting, Performance Measurement, Financial Forecasting, Analytics, Financial Trading, Financial Analysis, R Programming, Trend Analysis, Investments, Statistical Analysis, Risk Analysis, Algorithms
Intermediate · Course · 1 - 4 Weeks

University of Geneva
Skills you'll gain: Climate Change Adaptation, Water Resources, Hydrology, Risk Management, Water Quality, Natural Resource Management, Environment, Climate Change Mitigation, Sustainable Development, Social Network Analysis, Governance, Health Disparities, Environmental Science
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Email Marketing, Social Media Content, Search Engine Optimization, Web Analytics and SEO, Social Media Marketing, Brand Marketing, Branding, Digital Marketing, Marketing Design, Marketing, Content Management Systems
Beginner · Guided Project · Less Than 2 Hours

Universiteit Leiden
Skills you'll gain: Immunology, Nephrology, Surgery, Medical Practices and Procedures, Chronic Diseases, Patient Evaluation, Patient Education And Counseling, Patient Treatment, Pharmacology, Diagnostic Tests
Intermediate · Course · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Claude Code, Prompt Engineering, Multimodal Prompts, Version Control, AI Workflows, Generative AI Agents, Git (Version Control System), AI Orchestration, Quality Assurance, Generative AI, Software Quality Assurance, Software Development, Software Documentation, Artificial Intelligence, Software Development Life Cycle, Software Architecture, Automation, Software Testing, Software Design, Software Development Methodologies
Beginner · Course · 1 - 3 Months