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.

Lund University
Skills you'll gain: Sustainable Development, Climate Change Adaptation, Sustainable Design, Sustainable Technologies, Community Development, Governance, Socioeconomics, Water Sustainability, Sustainable Business, Systems Thinking, Environmental Resource Management, Environmental Issue, Environmental Science, Climate Change Mitigation, Case Studies, Water Resources, Multimedia, Business Modeling, Innovation, Stakeholder Engagement
Beginner · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Deductive Reasoning, Test Case, Program Development
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Keras (Neural Network Library), Tensorflow, Artificial Neural Networks, Deep Learning, Customer Analysis, Predictive Modeling, Data Processing, Feature Engineering, Predictive Analytics, Exploratory Data Analysis, Data Cleansing, Software Installation
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Customer Relationship Management, Customer experience strategy (CX), Brand Loyalty, Customer Data Management, Customer Analysis, Customer Engagement, Organizational Strategy, Business Strategy, Competitive Analysis, Business Analysis, Analysis, Auditing, Market Analysis
Mixed · Course · 1 - 4 Weeks
Skills you'll gain: Wireless Networks, Performance Tuning, Process Optimization, Design, Analysis, Mathematical Modeling
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Process Mapping, Six Sigma Methodology, Lean Six Sigma, Quality Improvement, Quality Management, Process Analysis, Process Improvement, Data-Driven Decision-Making, Business Process, Continuous Improvement Process, Team Oriented, Statistical Process Controls, Pareto Chart, Statistics, Statistical Methods, Root Cause Analysis
Mixed · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Social Network Analysis, Network Analysis, Data Wrangling, Natural Language Processing, Web Scraping, Social Sciences, Data Ethics, Databases, Artificial Intelligence, Research, Simulations, Big Data, Systems Thinking, Trend Analysis, Data Science, Artificial Intelligence and Machine Learning (AI/ML), Research Methodologies, Machine Learning, Data Collection, Agentic systems
Beginner · Specialization · 3 - 6 Months
IE Business School
Skills you'll gain: Brand Strategy, Branding, Brand Awareness, Logo Design, Brand Management, Target Audience, Target Market, Consumer Behaviour, Value Propositions, Marketing, Customer Insights, Marketing Psychology, Marketing Strategies, Advertising, Competitive Analysis, Typography, Storytelling, Color Theory
Intermediate · Course · 1 - 3 Months
Indian School of Business
Skills you'll gain: Positivity, Resilience, Psychology, Personal Development, Decision Making, Self-Awareness, Creativity, Emotional Intelligence, Curiosity, Mindfulness
Mixed · Course · 1 - 3 Months

Skills you'll gain: Business Process Modeling, Systems Analysis, Generative AI, Stakeholder Communications, Process Flow Diagrams, Business Workflow Analysis, Systems Architecture, Solution Architecture, Business Process Automation, LLM Application, Stakeholder Analysis, Technical Consulting, Software Architecture, Systems Thinking, Project Documentation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Git (Version Control System), Software Development Methodologies, JUnit, Requirements Analysis, Version Control, Application Development, Software Development Life Cycle, SQL, Full-Stack Web Development, Test Driven Development (TDD), Software Development, Restful API, Object Oriented Programming (OOP), Object Oriented Design, Database Management, MySQL, Digital Transformation, Relational Databases, Java Programming, Generative AI
Beginner · Professional Certificate · 3 - 6 Months

American Museum of Natural History
Skills you'll gain: Environment, Systems Thinking, Environmental Science, Natural Resource Management, Environmental Resource Management, Biology, Sustainable Development, Environmental Engineering and Restoration, Case Studies, Mathematical Modeling
Intermediate · Course · 1 - 3 Months