{
  "unit": 12,
  "standards": [
    "Direct comparison",
    "Limit comparison",
    "Alternating series",
    "Absolute and conditional convergence",
    "Ratio test",
    "Root test",
    "Test selection",
    "Counterexamples"
  ],
  "evidence": [
    "lesson derivations",
    "pathway problem set",
    "investigation",
    "mastery check",
    "portfolio correction"
  ]
}