{
  "unit": 8,
  "standards": [
    "Direction fields",
    "Euler’s method",
    "Separable equations",
    "Exponential growth and decay",
    "Logistic models",
    "First-order linear equations",
    "Integrating factors",
    "Model validation"
  ],
  "evidence": [
    "lesson derivations",
    "pathway problem set",
    "investigation",
    "mastery check",
    "portfolio correction"
  ]
}