Introduce your students to the world of Computer Science with this engaging, easy-to-use Lesson 1.1 Worksheet: What Is Computer Science?

Perfect for 9th–12th grade CSA/Java classes, this resource helps students understand the foundations of CS while writing and running their very first Java program using JDoodle — a free, no-login, browser-based Java IDE.

This worksheet is designed for teachers who want a fully independent lesson without relying on third-party curriculum platforms. Everything students need — explanations, examples, vocabulary, guided practice, and coding instructions — is included.

💡 What’s InsideStudent Worksheet (Print or Digital)

• 📘 Mini-Lesson: What is Computer Science?
  
• 💭 Computational Thinking: decomposition, patterns, abstraction, algorithms
  
• ☕ Java Basics: JVM, JDK, what programs do
  
• 📦 Quick Reference: Java class + main method structure
  
• ✏️ Vocabulary + Fill-in-the-Blanks
  
• 🧠 Guided Practice: short-answer, code tracing, predict-the-output
  
• 💻 Coding Activity using JDoodle
  
  • Starter code included
    
  • Step-by-step instructions
    
  • 100% free, no student accounts needed
    

• ⭐ Extension Challenge
  
• 📝 Reflection / Exit Ticket
  

🧑‍🏫 Teacher Guide Included

• 🎯 Lesson objectives
  
• 📚 Standards alignment (AP CSA + CSTA)
  
• 🖥️ How to help students use JDoodle
  
• 🧩 Common misconceptions to watch for
  
• 🕒 Timing suggestions (45–60 min)
  
• 🔑 Full answer key (vocabulary, short answer, tracing, Java solution)
  
• 🌟 Differentiation strategies
  
• ➕ Optional homework + quiz questions
  

🖨️ Format

• Printable 8.5x11 portrait layout
  
• Clean, classroom-friendly design
  
• Cute but professional icons and formatting
  
• Ready for PDF or DOCX export
  

🎓 Perfect For

✔ High school CSA / Java classes
✔ Intro to Computer Science units
✔ First-day Java activities
✔ Sub plans
✔ Independent practice
✔ TPT bundles & curriculum tracks