Pre-calculus courses can help you learn functions, trigonometry, complex numbers, and polynomial equations. You can build skills in graphing functions, solving equations, and understanding limits, which are crucial for calculus and other advanced math topics. Many courses introduce tools like graphing calculators and software for visualizing functions, which enhance your ability to analyze mathematical concepts and apply them in various fields such as engineering, physics, and computer science.

Skills you'll gain: Descriptive Statistics, Statistical Programming, R Programming, R (Software), Statistical Reporting, Data Quality, Data Preprocessing, Data Cleansing, Statistics, Data Processing, Statistical Methods, Statistical Software, Data Analysis Software, Statistical Analysis, Data Import/Export
★ 4.6 (93) · Beginner · Guided Project · Less Than 2 Hours

LearnQuest
Skills you'll gain: JUnit, Unit Testing, Software Testing, Test Case, Eclipse (Software), Test Tools, Test Data, Test Automation, Test Execution Engine, Integrated Development Environments, Java
★ 3.9 (54) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, API Design, Application Deployment, Application Programming Interface (API), Authentications, API Testing, Cloud Deployment, Web Services, Web Frameworks, User Provisioning, Unit Testing, Continuous Deployment, User Accounts, Test Script Development, Email Automation, Debugging, Operational Databases, Back-End Web Development, Software Testing, Continuous Integration
★ 4.2 (22) · Intermediate · Course · 1 - 3 Months

Arizona State University
Skills you'll gain: Statistical Process Controls, Process Control, Quality Assurance, Semiconductors, Process Validation, Production Process, Verification And Validation, Manufacturing Operations, Manufacturing Processes, Manufacturing and Production, Manufacturing Standards, Process Improvement, Process Analysis, Product Testing, Process Flow Diagrams, Electronics Engineering, Electronics, Reliability, Performance Testing
★ 4.7 (70) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Image Analysis, Computer Vision, Deep Learning, Machine Learning Methods, Matlab, Transfer Learning, Traffic Flow Optimization
★ 4.7 (36) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: IT Service Management, Information Technology Infrastructure Library, Change Control, IT Management, Information Technology Architecture, Service Management, Security Management, Technical Services, Infrastructure Architecture, Enterprise Architecture, Risk Management Framework, IT Infrastructure, IT Security Architecture, Computing Platforms
★ 4.8 (165) · Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Real-Time Operating Systems, Embedded Systems, Embedded Software, System Programming, System Design and Implementation, Software Design, OS Process Management, Linux, Systems Analysis, Test Tools, Theoretical Computer Science, Verification And Validation, Algorithms
★ 4.3 (20) · Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Test Automation, Test Script Development, Test Case, Selenium (Software), Software Testing, Test Tools, Maintainability, Code Reusability, Test Data, Debugging, Configuration Management
★ 4.5 (160) · Advanced · Guided Project · Less Than 2 Hours

University of Colorado System
Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Intrusion Detection and Prevention, Security Controls, Malware Protection, Security Engineering, Network Security, IT Security Architecture, Threat Detection, Firewall, Digital Forensics, Anomaly Detection, Code Review, Network Routing, Linux Commands, Proxy Servers, Linux, Internet Of Things
★ 4.5 (174) · Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Systems Engineering, Verification And Validation, Team Management, Team Performance Management, Systems Architecture, Requirements Analysis, Requirements Elicitation, Scrum (Software Development), Systems Development Life Cycle, Teamwork, Systems Development, Software Development Life Cycle, Configuration Management, Scaled Agile Framework, Team Building, Agile Methodology, Team Oriented, Team Motivation, Organizational Leadership, Leadership and Management
★ 4.7 (12) · Intermediate · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Spring Boot, Database Design, Object-Relational Mapping, Application Frameworks, Spring Framework, Data Modeling, Database Development, Database Software, Data Mapping, Application Development, Database Architecture and Administration, Requirements Analysis, Data Persistence
★ 4.4 (30) · Beginner · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: Cascading Style Sheets (CSS), Web Design and Development, digital literacy, Web Content Accessibility Guidelines
★ 4.5 (26) · Beginner · Course · 1 - 4 Weeks