This packet is everything a parent or guide needs to assess Unit 08 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 investigating a local impact and using the evidence to suggest an action.
By the end of the Human Impact on Living Systems unit, a student should be able to:
Six criteria, each judged Not yet / Approaching / Mastered (Page 3).
Investigate a local impact; gather the evidence.
The student weighs evidence and names a trade-off (Page 4).
Observations, evidence, and the proposed action 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 gather the evidence and defend the trade-off. 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 |
|---|---|---|
| Human impacts | ||
| Pollution | contamination | Harmful stuff added to air, water, or soil by human activity |
| Habitat loss | loss of home | Land is cleared or changed and species lose where they live |
| Invasive species | introduced species | A non-native species that spreads and crowds out natives |
| Climate change | global warming | Long-term shift in weather patterns, largely from burning fuels |
| Care & choices | ||
| Conservation | protecting nature | Using and protecting resources so they last |
| Stewardship | caring for the land | Taking responsibility for the health of living systems |
| Evidence | data, observations | What you actually measured or saw — not just an opinion |
| Trade-off | give-and-take | Every choice has an upside and a cost; name both |
| Criterion | Not yet | Approaching | Mastered |
|---|---|---|---|
| How humans change ecosystems | Thinks humans have no real effect on living systems. | Names one impact but not how it harms living things. | Describes how humans change ecosystems through pollution, habitat loss, invasive species, and climate. |
| Invasive species & habitat loss | Cannot say why a new species or lost habitat matters. | Names one but not its effect on native populations. | Explains how invasive species and habitat loss harm native populations. |
| Conservation & stewardship | Offers no way to protect living systems. | Names a fix but cannot say how it helps. | Gives examples of conservation and stewardship that protect living systems. |
| Weighing evidence & trade-offs | Gives an opinion with no evidence. | Cites evidence but ignores the trade-offs. | Weighs evidence and names the trade-offs in an environmental decision. |
| Lab technique (local human-impact investigation) | Reports impressions without data. | Gathers some data but does not tie it to an action. | Investigates a local human impact and uses the evidence to suggest an action. |
| 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 evidence plus trade-off: mastery backs a claim with what was actually measured and admits the cost of the fix. Ask “what did you measure, and what does your fix cost?”
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 | How humans change ecosystems | NY / Appr / Mast | |
| 2 | Invasive species & habitat loss | NY / Appr / Mast | |
| 3 | Conservation & stewardship | NY / Appr / Mast | |
| 4 | Weighing evidence & trade-offs | NY / Appr / Mast | |
| 5 | Lab technique (local human-impact investigation) | 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.