Big Idea 1 — Creative Development (CRD)

Creative Development focuses on how programs are planned, built, and improved with a user focus and feedback cycles. It emphasizes collaboration, program purpose and behavior, iterative/incremental design, documentation and acknowledgement of others’ work, and systematic testing/debugging. :contentReference[oaicite:0]{index=0}

• Collaboration (CRD-1): Diverse teams and effective interpersonal skills (communication, consensus, conflict resolution, negotiation) improve innovations and reduce bias.
• Program Function & Purpose (CRD-2.A–D): Programs solve problems or express interests; understand inputs (incl. events), outputs, and behavior across a range of situations.
• Design & Development (CRD-2.E–H): Use iterative + incremental processes (investigate → design → prototype → test); plan UIs, gather user feedback, document code and acknowledge external sources.
• Identifying & Correcting Errors (CRD-2.I–J): Find and fix logic, syntax, run-time, and overflow errors using defined test inputs (including edge cases), tracing, visualizations, and debuggers.

Day 1 — Variables, Constants, Strings, Numbers

• Focus: var vs let, strings, integers, doubles.
• Tip: Prefer let until you need mutation.
• Example:

// Day 1
    let name = "Mehmet"
    var score = 0
    score += 10
    let summary = "Hi \(name)! Score: \(score)"

Day 2 — Booleans & String Interpolation (Checkpoint 1)

• Focus: Bool, comparisons, interpolation.
• Tip: Keep conditions readable; avoid nesting when possible.
• Example:

// Day 2
    let passed = score >= 10
    let status = passed ? "✅ Passed" : "❌ Try again"
    print("Result: \(status)")

Day 5 — If, Switch, Ternary

• Focus: Branching with if, switch, and ?:.
• Tip: Use switch for discrete cases; keep if for ranges/booleans.
• Example:

// Day 5
    let grade = 88
    let band: String
    switch grade {
    case 90...100: band = "A"
    case 80..<90:  band = "B"
    default:       band = "C or below"
    }

Day 6 — Loops (for/while), break & continue (Checkpoint 3)

• Focus: Repetition patterns; exiting/skipping work safely.
• Tip: Prefer for over while unless conditions evolve inside.
• Example:

// Day 6
    var total = 0
    for n in 1...10 {
      if n == 5 { continue }   // skip 5
      total += n
    }
    print(total) // 1+2+3+4+6+7+8+9+10