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.

Skills you'll gain: Key Performance Indicators (KPIs), Performance Measurement, Business Metrics, Continuous Improvement Process, Performance Analysis, Business Process Improvement, Performance Improvement, Business Analysis, Data-Driven Decision-Making, Business Priorities, Operational Efficiency, Business Reporting, Smart Goals
Beginner · Course · 1 - 4 Weeks

Knowledge Accelerators
Skills you'll gain: Microsoft 365, Project Management, Project Coordination, Project Planning, Leadership and Management, Project Management Software, Calendar Management, Project Implementation, Collaborative Software, Workflow Management, Productivity, Productivity Software, Data Management, Business Software
Beginner · Course · 1 - 3 Months

Skills you'll gain: Exploratory Data Analysis, Data Analysis, Statistical Analysis, Classification And Regression Tree (CART), Scikit Learn (Machine Learning Library), Predictive Modeling, Matplotlib, Data Import/Export, Pandas (Python Package), Applied Machine Learning, Data Visualization Software, NumPy, Data Manipulation, Machine Learning
Beginner · Guided Project · Less Than 2 Hours

Packt
Skills you'll gain: Ruby (Programming Language), Object Oriented Programming (OOP), Ruby on Rails, Debugging, Programming Principles, Software Documentation, Scripting Languages, Development Environment, Integrated Development Environments, Computer Programming, Development Testing, Data Structures, Apple Xcode, Web Development, Software Installation, Microsoft Windows, Package and Software Management, Command-Line Interface
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Adobe Photoshop, Photo Editing, Graphical Tools, Graphic Design, Color Theory, Typography, Design Elements And Principles
Beginner · Guided Project · Less Than 2 Hours

Illinois Tech
Skills you'll gain: Machine Learning Algorithms, Statistical Analysis, Data Visualization, Data Analysis, Exploratory Data Analysis, Data Cleansing, Analytics, Machine Learning, Data Science, Regression Analysis, Data Manipulation, Data Mining, Statistical Modeling, Python Programming, Feature Engineering, Scikit Learn (Machine Learning Library), Classification And Regression Tree (CART), Decision Tree Learning
Build toward a degree
Intermediate · Course · 1 - 3 Months

University of Washington
Skills you'll gain: Responsive Web Design, Web Design, GitHub, HTML and CSS, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Version Control, User Experience Design, User Experience, Javascript, Web Content Accessibility Guidelines, Browser Compatibility, User Story, Web Design and Development, Front-End Web Development, Web Development, Microsoft Copilot, Mobile Development, Semantic Web, Git (Version Control System)
Beginner · Specialization · 1 - 3 Months

Fundação Instituto de Administração
Skills you'll gain: Human Resources Management and Planning, Human Resource Strategy, Human Resources, Human Capital, Team Performance Management, Team Management, Diversity Programs, Fundraising, Compensation and Benefits, Business Transformation, Compensation Management, Compensation Strategy, Employee Retention, Benefits Administration, Training and Development, Workforce Development, Talent Management, People Management, Business Leadership, Strategic Leadership
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Music Theory, Music Performance, Music, Leadership, Booking (Sales), Professional Networking, Professional Development, Entrepreneurship, Verbal Communication Skills, Scheduling
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Version Control, GitLab, Continuous Integration, Software Versioning, CI/CD, Git (Version Control System), Software Development Tools, Javascript
Beginner · Guided Project · Less Than 2 Hours

Microsoft
Skills you'll gain: Rmarkdown, Version Control, Web Scraping, Regression Analysis, Knitr, Exploratory Data Analysis, Statistical Analysis, Data Manipulation, Dimensionality Reduction, Ggplot2, Geospatial Information and Technology, Time Series Analysis and Forecasting, Plotly, Microsoft Azure, Data Cleansing, Data Visualization, Data Wrangling, Software Documentation, R Programming, Microsoft Copilot
Beginner · Professional Certificate · 3 - 6 Months

Pontificia Universidad Católica de Chile
Skills you'll gain: Sustainable Development, Environment, Environmental Issue, Social Justice, Environment and Resource Management, Sustainability Standards, Climate Change Adaptation, Natural Resource Management, Systems Thinking, Social Sciences, Climate Change Mitigation, Economic Development
Beginner · Course · 1 - 3 Months