Parent plan · Week 23 · Ecology, Populations & Biodiversity — launch — Physics & Environmental Science

Parent teaching plan · 36 weeks

Units to teach or revisit

Chapter 8 · Ecology, Populations & Biodiversity

Assigned readings

Develop this chapter question: How can ecological measurements support a claim about a living system?

This week’s goals

Read A food-web arrow and a survey count both need a definition at chapter launch and revisit it alongside this week’s linked units, figures and investigation.

Five flexible sessions, normally 50–60 minutes. Two core unit sessions are scheduled, with a third for selected demanding topics. Sample week uses a complete 90-minute paper plus about 30 minutes of corrections within two ordinary-hour equivalents.

Session 1 · Ecosystem Structure & Energy Flow — build the model

Use the linked chapter reading, unit explanations, figures and notebook.

Your task

Read the chapter background and unit language. Draw a first model, study the core explanation and Parts 1–2, trace each figure and attempt the visual questions/checks. Complete a first worked case with its answer covered.

  1. Prepare the assigned explanation and identify the question.
  2. Trace a model or graph, labeling its quantities and units.
  3. Attempt the assigned reasoning and calculation before opening guidance.
  4. Compare with criteria and retain an explained correction.
Hint and response guidance

Name the objects, quantities, boundary and assumptions before choosing a relationship. Use the matching figure to check each step.

It tracks energy/material transferred when the rabbit consumes the grass. 1200/8000=15%, using matched area/time definitions.

  • Use the supplied evidence and correct quantity/units.
  • Explain the relevant mechanism or relationship.
  • Show intermediate working or a labeled model.
  • State an assumption, limitation or useful next test.

Session 2 · Ecosystem Structure & Energy Flow — apply and explain

Use the linked chapter reading, unit explanations, figures and notebook.

Your task

Study Parts 3–4 and selected source-model prompts, then attempt the whole-unit application, illustrated practice and changed independent case. Explain a correction, revise the opening model and complete the exit check.

  1. Prepare the assigned explanation and identify the question.
  2. Trace a model or graph, labeling its quantities and units.
  3. Attempt the assigned reasoning and calculation before opening guidance.
  4. Compare with criteria and retain an explained correction.
Hint and response guidance

Name the objects, quantities, boundary and assumptions before choosing a relationship. Use the matching figure to check each step.

NPP=7000 kJ/m²/yr. Efficiency=840/7000=12%. The fraction uses NPP, not GPP, and does not imply every intermediate process has 12% efficiency.

  • Use the supplied evidence and correct quantity/units.
  • Explain the relevant mechanism or relationship.
  • Show intermediate working or a labeled model.
  • State an assumption, limitation or useful next test.

Session 3 · Biodiversity & Ecosystem Services — build the model

Use the linked chapter reading, unit explanations, figures and notebook.

Your task

Read the chapter background and unit language. Draw a first model, study the core explanation and Parts 1–2, trace each figure and attempt the visual questions/checks. Complete a first worked case with its answer covered.

  1. Prepare the assigned explanation and identify the question.
  2. Trace a model or graph, labeling its quantities and units.
  3. Attempt the assigned reasoning and calculation before opening guidance.
  4. Compare with criteria and retain an explained correction.
Hint and response guidance

Name the objects, quantities, boundary and assumptions before choosing a relationship. Use the matching figure to check each step.

Yes. Relative abundances, identities and other diversity dimensions can differ. X is more even because all four observed species have equal counts.

  • Use the supplied evidence and correct quantity/units.
  • Explain the relevant mechanism or relationship.
  • Show intermediate working or a labeled model.
  • State an assumption, limitation or useful next test.

Session 4 · Biodiversity & Ecosystem Services — apply and explain

Use the linked chapter reading, unit explanations, figures and notebook.

Your task

Study Parts 3–4 and selected source-model prompts, then attempt the whole-unit application, illustrated practice and changed independent case. Explain a correction, revise the opening model and complete the exit check.

  1. Prepare the assigned explanation and identify the question.
  2. Trace a model or graph, labeling its quantities and units.
  3. Attempt the assigned reasoning and calculation before opening guidance.
  4. Compare with criteria and retain an explained correction.
Hint and response guidance

Name the objects, quantities, boundary and assumptions before choosing a relationship. Use the matching figure to check each step.

Richness=3. Fractions 0.6,0.3,0.1 give D=1−(0.36+0.09+0.01)=0.54. The sample may miss rare or hard-to-detect species; matched effort and replication matter.

  • Use the supplied evidence and correct quantity/units.
  • Explain the relevant mechanism or relationship.
  • Show intermediate working or a labeled model.
  • State an assumption, limitation or useful next test.

Session 5 · Population Ecology — build the model

Use the linked chapter reading, unit explanations, figures and notebook.

Your task

Read the chapter background and unit language. Draw a first model, study the core explanation and Parts 1–2, trace each figure and attempt the visual questions/checks. Complete a first worked case with its answer covered.

  1. Prepare the assigned explanation and identify the question.
  2. Trace a model or graph, labeling its quantities and units.
  3. Attempt the assigned reasoning and calculation before opening guidance.
  4. Compare with criteria and retain an explained correction.
Hint and response guidance

Name the objects, quantities, boundary and assumptions before choosing a relationship. Use the matching figure to check each step.

ΔN=20+5−8−7=+10 individuals over the stated interval. 60 individuals per year at that instant; it is not the exact full-year increase if N changes continuously.

  • Use the supplied evidence and correct quantity/units.
  • Explain the relevant mechanism or relationship.
  • Show intermediate working or a labeled model.
  • State an assumption, limitation or useful next test.

Submit this week

Parent / teacher weekly conference

Use actual written work to adjust support. Do not count a copied solution as independent mastery. Extend or redistribute time where needed; home-study records do not certify supervised or mandated laboratory requirements.

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