In this ReactJS lesson, students will explore the fundamentals of building modern web interfaces using reusable components. We'll cover JSX syntax, component structure, props and state, and the concept of unidirectional data flow. By the end of the lesson, students will create a functional React app that demonstrates dynamic UI updates and proper component hierarchy. The lesson includes hands-on exercises to strengthen understanding and ensure practical experience with real-world coding scenarios. This session is ideal for learners looking to start or reinforce their journey with ReactJS development.