This guided Java lab helps AP Computer Science A students apply the key programming concepts from Units 1.5–1.9 in a hands-on, structured way. Students write, modify, and document Java code while exploring casting, compound assignment, the Math API, comments, and method overloading — all in a single, step-by-step activity. Each section includes code examples, explanations, and follow-up questions to reinforce comprehension and prepare students for AP-style assessments.