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.

Codio
Skills you'll gain: Go (Programming Language), Object Oriented Programming (OOP), Web Services, Debugging, Python Programming, Restful API, Server Side, Performance Tuning, Version Control, Software Engineering
Beginner · Course · 1 - 4 Weeks

University of Alberta
Skills you'll gain: Conflict Management, Team Leadership, Organizational Leadership, Diversity and Inclusion, Workplace inclusivity, Leadership and Management, People Management, Rapport Building, Leadership, Occupational Safety And Health, Leadership Development, Interpersonal Communications, Communication, Collaboration, Strategic Leadership, Stress Management, Empathy, Employee Engagement, Mental Health, Active Listening
Beginner · Course · 1 - 3 Months

Skills you'll gain: Data Ethics, Business Ethics, Ethical Standards And Conduct, Responsible AI, Artificial Intelligence, Information Privacy, Informed Consent, Personally Identifiable Information, Accountability, Generative AI Agents, Data Governance, Data Collection, Algorithms
Beginner · Course · 1 - 4 Weeks

Politecnico di Milano
Skills you'll gain: Socioeconomics, Epidemiology, Crisis Management, Social Determinants Of Health, Health Technology, Health Policy, Social Sciences, Infectious Diseases, Public Health, Network Analysis, Mental Health, Health Informatics, Health Care, Surveys, Data-Driven Decision-Making, Data Science, Artificial Intelligence
Beginner · Course · 1 - 3 Months

Skills you'll gain: Continuous Improvement Process, Process Improvement, Risk Management, Performance Measurement, Quality Management, Process Analysis, Performance Management, Project Management, Process Optimization, Verification And Validation, Requirements Analysis, Project Planning, Root Cause Analysis
Mixed · Course · 1 - 4 Weeks

Politecnico di Milano
Skills you'll gain: Health Policy, Economics, Policy, and Social Studies, Crisis Management, Policty Analysis, Research, and Development, Socioeconomics, Geographic Information Systems, Public Health, Data Science, Financial Modeling, Fundraising and Crowdsourcing, Finance, Network Analysis, Data Collection
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Multimodal Prompts, Linear Algebra
Build toward a degree
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Demand Planning, Customer Demand Planning, Supply Chain Planning, Production Planning, Forecasting, Time Series Analysis and Forecasting, Trend Analysis, Inventory Management System, Data Analysis, Predictive Modeling, R Programming, Data Visualization
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Canva (Software), Animations, Content Creation, Design Elements And Principles, User Accounts, Creative Design, Color Theory, Graphical Tools
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Backlogs, User Story, Sprint Planning, Project Estimation, Agile Methodology, Agile Product Development, Sprint Retrospectives, Agile Project Management, Estimation, Acceptance Testing, Prioritization, Team Management, Cross-Functional Collaboration
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Computational Logic, Theoretical Computer Science, System Requirements, Verification And Validation, Mathematical Modeling, Control Systems, Computer Science, Artificial Intelligence
Build toward a degree
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Logo Design, Graphic Design, Digital Design, Design, Graphic and Visual Design, Collaborative Software, Design Software, Advertising, Organizational Skills, Marketing, Color Theory
Intermediate · Guided Project · Less Than 2 Hours