This packet is everything a parent or guide needs to assess Unit 04 at home — learning targets, the answers that count as correct, the mastery rubric, calibration examples, and a clipboard score sheet. No multiple-choice test: the student shows mastery by modeling population growth and a footprint from real data and defending the assumptions aloud.
By the end of the Human Population & Resource Use unit, a student should be able to:
Six criteria, each judged Not yet / Approaching / Mastered (Page 3).
Model growth or a footprint from real demographic data.
The student defends what actually drives the impact (Page 4).
Data, model, and the assumptions behind it kept distinct.
You are making a decision, not adding up points. For each criterion, decide whether the work is Not yet, Approaching, or Mastered — the column language tells you which. A criterion counts as mastered only when the student can both build the model and justify what drives the impact. A student carries three tokens per term; one token buys a re-do of one criterion on another day, so a single bad afternoon never sinks the unit.
Accept any answer in the synonyms column — they are pre-approved as equivalent. The third column flags the confusions that look close but are not yet, so you can coach precisely.
| Canonical answer | Accepted synonyms | Common confusion / discriminator |
|---|---|---|
| Population change | ||
| Demographic transition | DTM | Nations move through stages as birth and death rates fall |
| Age-structure pyramid | population pyramid | A wide base forecasts growth; a narrow one, decline |
| Doubling time | rule of 70 | Time for a population to double; short means fast exponential growth |
| Impact & resources | ||
| IPAT | I = P × A × T | Impact = population × affluence × technology; not population alone |
| Ecological footprint | resource demand | The land and resources one person or nation demands |
| Carrying capacity | K | The population an environment can sustain long-term — humans included |
| Renewable resource | replenishable | Regrows on a human timescale — only if not overdrawn |
| Nonrenewable resource | finite stock | Fossil fuels, minerals; use depletes it for good |
| Criterion | Not yet | Approaching | Mastered |
|---|---|---|---|
| Demographic transition model | Thinks every country’s population behaves the same way. | Names the transition stages but cannot place a country in one. | Places a nation in a demographic-transition stage from its birth and death rates and predicts its next move. |
| Age structure & population growth | Cannot read a population pyramid. | Reads a pyramid’s shape but not its growth implication. | Uses an age-structure pyramid to forecast whether a population will grow, stabilize, or shrink, and explains exponential growth and doubling time. |
| The IPAT relationship | Blames environmental impact on population alone. | Names IPAT’s factors but cannot weigh them. | Uses I = P × A × T to explain how affluence and technology, not just population, drive environmental impact. |
| Ecological footprint & resources | Cannot distinguish renewable from nonrenewable resources. | Sorts resources but cannot connect use to a footprint. | Calculates an ecological footprint and explains resource depletion and the limits of renewable versus nonrenewable supply. |
| Field technique (footprint & population modeling) | Cannot set up a footprint or growth calculation. | Runs the numbers but mishandles units or assumptions. | Models population growth or footprint from real demographic data and defends the assumptions behind the estimate. |
| Integration (cross-domain) | Treats the science as isolated facts; makes no cross-domain connection. | Names a link to history, reading, or writing but cannot defend why it matters. | Connects the unit to its anchor across History · Reading · Writing (plus chosen electives) and defends why the connection matters. |
The split between Approaching and Mastered is cause behind the number: not just calling a country big, but using IPAT to say why a smaller, wealthier nation can out-consume it. Listen for “population times affluence times technology.”
Read these before you grade. They show what Mastered and Not yet actually sound like, plus the edge cases where you should coach rather than decide on the spot.
Student: ______________________________________ Date: _______________ Guide: _________________________
| # | Criterion | Decision | Notes |
|---|---|---|---|
| 1 | Demographic transition model | NY / Appr / Mast | |
| 2 | Age structure & population growth | NY / Appr / Mast | |
| 3 | The IPAT relationship | NY / Appr / Mast | |
| 4 | Ecological footprint & resources | NY / Appr / Mast | |
| 5 | Field technique (footprint & population modeling) | NY / Appr / Mast | |
| 6 | Integration (cross-domain) | NY / Appr / Mast |
☐ No ☐ Yes — for criterion: __________ Tokens remaining: ☐ 3 ☐ 2 ☐ 1 ☐ 0
NY = Not yet · Appr = Approaching · Mast = Mastered · Unsure between two levels? Circle the lower one and note what a re-do would need.