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.

American Psychological Association
Skills you'll gain: Diversity Awareness, Sociology, Psychology, Cultural Diversity, Human Development, Social Sciences, Learning Theory, Biology, Research
Beginner · Course · 3 - 6 Months

Skills you'll gain: Feature Engineering, Data Ethics, Unsupervised Learning, Dimensionality Reduction, Responsible AI, Text Mining, Data Preprocessing, Data Transformation, MLOps (Machine Learning Operations), Anomaly Detection, Exploratory Data Analysis, Machine Learning Methods, Machine Learning, Model Evaluation, Natural Language Processing, Data Science, Quality Assurance, Data Pipelines, Data Visualization, Python Programming
Advanced · Course · 1 - 4 Weeks

Berklee
Skills you'll gain: Music Theory, Music, Instrumental Music, Music Performance
Beginner · Course · 1 - 3 Months

Skillshare
Skills you'll gain: Storyboarding, Animations, Storytelling, Motion Graphics, Multimedia, Musical Composition, Adobe After Effects, Photo/Video Production and Technology, Video Editing, Apple software proficiency, Timelines, Layout Design, Color Theory, Design
Beginner · Specialization · 1 - 3 Months

Radio y Televisión Española
Skills you'll gain: Social Media Content, Social Media Strategy, Live Streaming, Photo/Video Production and Technology, Social Media Management, Video Production, Content Strategy, Web Content, Media and Communications, Content Creation, Journalism, digital literacy, Mobile Development Tools, Research, Digital Communications, Investigation, Social Network Analysis, Trend Analysis, Verification And Validation, Open Source Technology
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Canva (Software), Marketing Collateral, Design, Marketing Materials, Graphic Design, Productivity, Color Theory, Presentations, Digital Content, Organizational Skills, Planning
Intermediate · Guided Project · Less Than 2 Hours

Universidad Nacional Autónoma de México
Skills you'll gain: Systems Thinking, Sustainable Systems, Sustainable Development, Environmental Issue, Environmental Science, Sustainability Standards, Social Sciences, Economics, Policy, and Social Studies, Social Impact, Community Development, World History
Beginner · Course · 1 - 3 Months

Skills you'll gain: Model Evaluation, Feature Engineering, Bioinformatics, Dimensionality Reduction, Predictive Modeling, Deep Learning, Artificial Neural Networks, Pandas (Python Package), Drug Development, Unsupervised Learning, Scikit Learn (Machine Learning Library), Data Manipulation, Molecular Biology, Regression Analysis, Machine Learning Algorithms, Machine Learning
Intermediate · Course · 1 - 4 Weeks

ESSEC Business School
Skills you'll gain: Sustainable Business, Corporate Sustainability, Sustainable Development, Climate Change Programs, Business Transformation, Environmental Social And Corporate Governance (ESG), Systems Thinking, Business Modeling, Waste Minimization, Innovation, Case Studies, Resource Utilization, Stakeholder Engagement
Beginner · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Injury Prevention, Child Welfare, Substance Abuse, Public Health, Epidemiology, Community Health, Family Law, Health Policy, School Psychology, Risk Analysis, Mental Health, Research
Beginner · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Stakeholder Management, Work Breakdown Structure, Conflict Management, Project Planning, Project Scoping, Organizational Structure, Project Management, Planning, Project Documentation, Stakeholder Analysis, Leadership and Management, Influencing
Mixed · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: AWS Identity and Access Management (IAM), Amazon Web Services, Serverless Computing, Amazon S3, Identity and Access Management, Disaster Recovery, Amazon Elastic Compute Cloud, Amazon CloudWatch, Cloud Computing Architecture, Amazon Redshift, Amazon DynamoDB, Solution Architecture, Cloud-Native Computing, Containerization, Cloud Infrastructure, Cloud Engineering, Kubernetes, Cloud Computing, Hybrid Cloud Computing, API Gateway
Intermediate · Specialization · 1 - 3 Months