Unit 1 · Using Objects & MethodsWelcome to AP CSA

Watch before discussing

A quick video primer to get everyone on the same page before diving into the questions below.

Discussion Questions

  1. 1Java was originally designed for smart home devices, not the internet. Why do you think it became one of the most widely used languages instead?
  2. 2James Gosling worked at Sun Microsystems for years before creating Java. What does that tell you about how long it can take to develop something truly impactful?
  3. 3Java runs on a "virtual machine" (JVM) so the same code works on any device. What industries today still depend on that "write once, run anywhere" promise?
  4. 4If you were designing a new programming language from scratch today, what one problem would you most want it to solve?
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Welcome to AP CSA

What you'll build, how the exam works, and how the year is paced.

⚡Quick Take· 60 sec warm-up

Before the lesson

Watch this 60-second clip for a fast vibe-check on the concept. Then dive into the full lesson below.

Video lesson· 22 min
Reading

What is AP CSA?

The College Board describes AP Computer Science A as a first-year, college-level introduction to object-oriented programming in Java. The exam is on Monday, May 3, 2027 and is graded on a 1–5 scale.

How this course is paced

This course is organised into 4 units that cover all of the College Board's 10-unit AP CSA curriculum, with weekly checkpoints so you always know what to study, when, and what's coming.

  • Sept → Oct Unit 1: Using Objects & Methods
  • Nov → Dec Unit 2: Selection & Iteration
  • Jan → Feb Unit 3: Class Creation
  • Mar → Apr Unit 4: Data Collections
  • May Mock exams + the real AP exam

What to do this week

  1. Explore beginner IDEs (Greenfoot → BlueJ) so “classes” and “objects” feel real.
  2. Install the JDK 21 + IntelliJ Community (you’ll use this most of the year).
  3. Bookmark this dashboard - every lesson has a "Suggested by" date next to it.
  4. Skim the College Board CED appendix.

You'll see the Week N · target date badge on every lesson - when in doubt, follow the badge.

Key takeaways

  • 1The AP CSA exam is on Monday, May 3, 2027 (placeholder until College Board confirms).
  • 2The course is paced into 31 weekly checkpoints aligned with College Board's 4-unit framework.

Quick self-check