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 Michigan
Skills you'll gain: Injury Prevention, Child Welfare, Substance Abuse, Public Health, Public Safety and National Security, Epidemiology, Health Disparities, Community Health, Family Law, Health Policy, Risk Analysis, Program Evaluation, Mental Health, Research
Beginner · Course · 1 - 3 Months

University of Alberta
Skills you'll gain: Natural Resource Management, Climate Change Adaptation, Environment and Resource Management, Sustainable Development, Community Development, Environmental Policy, Case Studies, International Relations, Environmental Science, Socioeconomics
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Canva (Software), Instagram, Social Media Content, Graphic Design, Graphic and Visual Design, Social Media Marketing, Organizational Skills, Marketing Design, Typography, Color Theory, Business Strategy
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Investigation, Fraud detection, Auditing, Litigation Support, Financial Accounting, Accounting, Report Writing, Threat Detection, Due Diligence, Internal Controls, Risk Analysis, International Finance, Compliance Training, Case Studies
Mixed · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Entrepreneurial Finance, Design Thinking, Business Modeling, Entrepreneurship, Business Planning, Performance Measurement, Competitive Analysis, Market Research, Leadership and Management, Value Propositions, New Product Development, Operational Analysis, Market Opportunities, Target Market, Product Development, Intellectual Property, Gap Analysis, Systems Thinking, Engineering Management, Engineering
Build toward a degree
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: File Management, Document Management, Microsoft Power Automate/Flow, Email Automation, Version Control, Intranet, Automation
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Azure DevOps, Continuous Delivery, CI/CD, DevOps, Test Planning, Continuous Integration, Git (Version Control System), YAML, GitHub, Agile Methodology, Version Control, Development Testing, Agile Project Management, Application Deployment, Release Management, Sprint Planning, Scrum (Software Development), Code Review
Intermediate · Course · 1 - 3 Months

SAE Institute México
Skills you'll gain: Video Editing, Color Theory, Post-Production, Timelines, Data Import/Export
Beginner · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Operating Systems, OS Process Management, System Programming, File Systems, Unix Commands, Command-Line Interface, System Monitoring, System Design and Implementation, Performance Tuning, Package and Software Management, File Management, Algorithms, Cloud Platforms, Security Controls, User Accounts, Debugging
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Diversity and Inclusion, Innovation, Organizational Leadership, Industrial and Organizational Psychology, Organizational Change, Creativity, Human Capital, Leadership, Drive Engagement, Team Performance Management, Change Management, Business, Business Strategy, Decision Making, Business Marketing, Neurology
Build toward a degree
Beginner · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: AWS Kinesis, AWS SageMaker, Amazon CloudWatch, Serverless Computing, Containerization, Amazon Web Services, Data Migration, Amazon DynamoDB, Amazon S3, AWS CloudFormation, Amazon Redshift, Infrastructure as Code (IaC), CI/CD, SQL, Extract, Transform, Load, Cloud Engineering, Real Time Data, Cloud Security, AWS Identity and Access Management (IAM), Data Processing
Beginner · Specialization · 1 - 3 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Leadership and Management, Decision Making, Ethical Standards And Conduct, Business Ethics, Emotional Intelligence, Business Leadership, Organizational Leadership, Leadership, Leadership Development, Waterfall Methodology, Motivational Skills, Team Motivation, Project Management Life Cycle, Project Management, Self-Awareness
Beginner · Course · 1 - 4 Weeks