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 Amsterdam
Skills you'll gain: Sociology, Social Sciences, Systems Thinking, Economics, Policy, and Social Studies, Cultural Diversity, Policy Analysis, Environmental Science, Spatial Analysis, Case Studies, Human Centered Design, Public Policies, Qualitative Research, Sustainable Engineering, Environment and Resource Management, European History
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Statistical Hypothesis Testing, Statistical Methods, Statistical Analysis, Probability & Statistics, Data Ethics, Statistical Inference, Quantitative Research, Sampling (Statistics), Probability Distribution
Build toward a degree
Intermediate · Course · 1 - 3 Months

Universidad de Palermo
Skills you'll gain: Team Leadership, Team Management, Organizational Leadership, Leadership Development, Leadership, Industrial and Organizational Psychology, Motivational Skills, Business Leadership, Leadership and Management, Case Studies, Organizational Effectiveness, Workplace Bullying Intervention, Professional Development, Personal Attributes, Business, Business Ethics, Diversity and Inclusion, Adaptability, Business Administration, Human Development
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Feature Engineering, Exploratory Data Analysis, Pandas (Python Package), Scikit Learn (Machine Learning Library), Data Manipulation, NumPy, Classification Algorithms, Data Preprocessing, Data Analysis, Python Programming, Regression Analysis, Predictive Modeling, Machine Learning Algorithms, Machine Learning, Data Science, Statistical Hypothesis Testing, Supervised Learning, Statistical Methods, Data Structures
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Exploratory Data Analysis, NumPy, Data Visualization, Data Analysis, Seaborn, Matplotlib, Statistical Visualization, Jupyter, Dimensionality Reduction, Data Science, Machine Learning Methods, Python Programming, Data Preprocessing
Intermediate · Guided Project · Less Than 2 Hours

University of Michigan
Skills you'll gain: Occupational Health, Public Health, Environmental Laws, Environmental Regulations, Health Systems, Environmental Policy, Systems Thinking, Occupational Safety and Health Administration (OSHA), Environmental Science, Epidemiology, Environmental Issue, Environmental Monitoring, Health Policy, Personal protective equipment, Risk Analysis
Beginner · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: Systems Thinking, Sustainable Systems, Sustainable Development, Food and Beverage, Nutrition and Diet, Economics, Environmental Science, Energy and Utilities, Production Process, Water Resources, Land Management, Environment and Resource Management, Culture, Consumer Behaviour
Beginner · Course · 1 - 3 Months

University of Geneva
Skills you'll gain: Health Care Procedure and Regulation, Public Health, Infectious Diseases, Environment Health And Safety, Health Policy, Epidemiology, Health Systems, International Relations, Public Safety and National Security, Emergency Response, Health Assessment, Governance
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Calculus, Integral Calculus, Applied Mathematics, Graphing, Numerical Analysis, Python Programming, Advanced Mathematics, Mathematical Software, Mathematical Modeling, Derivatives, Programming Principles
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Stored Procedure, Database Design, Git (Version Control System), Database Development, MySQL, Databases, Database Application, Data Visualization Software, Version Control, SQL, Tableau Software, Data Modeling, Transaction Processing, Django (Web Framework), Project Management, Application Development, Python Programming
Intermediate · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Health Informatics, Executive Presence, Strategic Communication, Healthcare Ethics, Strategic Planning, Health Care Administration, Health Policy, Leadership, Business Planning, Patient Safety, Innovation, Healthcare Project Management, Telehealth, Design Thinking, Advocacy, Communication, Leadership and Management, Change Management, Continuous Quality Improvement (CQI), Safety Standards
Beginner · Specialization · 1 - 3 Months

University of California, Davis
Skills you'll gain: Simulations, Social Sciences, Systems Thinking, Agentic systems, Social Network Analysis, Model Evaluation, Sociology, Economics, Scientific Methods, Computer Programming
Beginner · Course · 1 - 4 Weeks