Module 2 Notes: Biologically Primary vs Biologically Secondary Knowledge

Biologically Primary vs Biologically Secondary Knowledge

  • Module focus: Geary’s theory; explain, model, and check for understanding; justify fully guided instruction; corrective feedback; concept development and skill development.
  • Key distinction: not all knowledge is equal; biologically primary vs biologically secondary knowledge.

Biologically Primary Knowledge

  • Definition: evolved to learn; naturally acquired; universal across humans.
  • How learned: through interaction with others and environment; no explicit instruction needed.
  • Examples: speaking and social communication; facial recognition; navigating the local area; solving problems.
  • Why it exists: aids survival and social coordination (e.g., warning signals, finding exits, cooperation).
  • Cognitive load theory note: irrelevant for biologically primary knowledge; working memory constraints do not govern mastery of these skills.
  • Folk knowledge: general understandings about people, behavior, plants/animals; learned through everyday life.

Biologically Secondary Knowledge

  • Definition: not evolved to learn automatically; requires deliberate instruction.
  • How learned: explicit teaching; slower, effortful, less reliable without guidance.
  • Examples: reading, writing, mathematics, scientific concepts, complex academic ideas.
  • Acquisition methods: borrowing and reorganising from others; trial and error; can take long time if unguided.
  • Schools’ role: essential for teaching this type of knowledge needed to navigate the modern world.
  • Why valuable: extends beyond immediate intuition; supports civilization and cumulative knowledge (standing on the shoulders of giants).

Quick Classification Activity (from transcript)

  • Navigating the local area: Primary
  • Driving a car: Secondary
  • Writing your name: Secondary
  • Singing nursery rhymes: Primary
  • Training for a marathon: Secondary
  • Climbing a fence: Primary

Why Secondary Knowledge Matters for Civilization

  • Folk knowledge vs explicit knowledge: folk knowledge is intuitive but limited; explicit knowledge accelerates and refines understanding.
  • Imagination and progress: explicit, accumulated knowledge enables breakthroughs beyond immediate intuitions.

How Biologically Secondary Knowledge Is Acquired

  • Borrowing and reorganising: listen to others and adapt their explanations.
  • Trial and error: can work but is slow and unreliable.
  • Explicit instruction is the reason schools exist for this knowledge.

Explicit Instruction vs Guided Instruction

  • Key question: Does explicit instruction interfere with students’ construction of knowledge?
  • Common belief in schools: explicit instruction can be seen as limiting—but evidence and pedagogy suggest:
    • Explicit instruction provides a solid foundation for students to build upon.
    • Students still actively construct their own knowledge after receiving guidance.
    • Modelling, guided practice, and subsequent independent tasks foster higher-order thinking.
  • Classroom stance (from transcript):
    • A majority view: explicit instruction does not prevent construction of knowledge; it supports it when followed by active application and generation.
    • Without some explicit guidance, learning secondary knowledge can be daunting.

Teaching Implications

  • For biologically primary knowledge: natural acquisition through exposure and social interaction is often sufficient.
  • For biologically secondary knowledge: teach explicitly and scaffolded; then provide opportunities to apply, reason, and create beyond the given information.
  • Use a balanced approach: explicit instruction plus opportunities for students to generate, question, and extend understanding.