🔬 Ecosystems & Interdependence — printable rubric packet (Life Science Unit 07). Print 8.5×11 portrait. Every page is designed for clipboard use while you grade at the bench.
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▲ Page 1 — Unit overview
Bright Minds Life Science · Course Pack
Ecosystems & Interdependence — Unit Packet
Overview
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Use these targets, vocabulary, rubrics, examples, and score sheet with the instructor's approved lesson and procedure. This is an assessment companion, not a complete lesson or safety authorization.

Student lessons, data, and worked answers: Unit 07 learning pathway.

Unit learning targets

The student demonstrates the following:

How this unit is assessed

Mastery rubric

Five science criteria plus separately reported integration (Page 3).

Food-web lab

Build and revise a paper food web; no organism collection.

Oral check

The student traces energy from the sun upward (Page 4).

Lab notebook

Roles, the food web, and the what-if predictions kept distinct.

How to read a Bright Minds rubric

You are making a decision, not adding up points. For each criterion, decide whether the work is Developing, Proficient, or Mastery — the column language tells you which. A criterion counts as mastered only when the student can both build the food web and defend how energy flows through it. Each student has three tokens per term; each token retries one rubric criterion. Approved accommodations, equipment failures, and approved absences are handled separately and do not consume these tokens.

▲ Page 2 — Key terms
Ecosystems & Interdependence · Vocabulary
Key Terms — What Counts as Correct
Vocabulary
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Accept listed synonyms; use the distinction column to resolve near-matches.

Canonical answerAccepted synonymsCommon confusion / discriminator
Roles & feeding
Producerplant, food-makerMakes its own food from sunlight — the base of every food web
Consumeranimal that eats othersGets energy by eating producers or other consumers
DecomposerrecyclerBreaks down dead things and returns nutrients to the soil
Food webfeeding networkMany food chains linked — all the who-eats-whom paths at once
Energy & change
Food chainsingle feeding pathOne straight line of who eats whom, sun to top — not who is biggest
Energy flowenergy transferEnergy moves from the sun up each level and drops along the way
Interdependenceliving things rely on each otherChange one part and the others feel it
Populationgroup of one speciesHow many of one kind live in an area; can boom or crash
▲ Page 3 — Mastery rubric
Ecosystems & Interdependence · Mastery Rubric
Six Criteria — Developing / Proficient / Mastery
Rubric
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CriterionDevelopingProficientMastery
Producers, consumers & decomposersCan’t sort living things by how they get their food.Names the roles but places some organisms wrong.Sorts organisms into producers, consumers, and decomposers and explains each role.
Food chains & food websThinks a food chain is about which animal is biggest.Builds a straight food chain but not a connected web.Builds a food web that shows how many food chains link together in an ecosystem.
Energy flowConfuses energy flow with recycling matter.Shows direction but omits units, transfer losses or heat.Traces energy through a food web, calculates a supplied transfer percentage, and distinguishes heat loss from cycling matter.
Interdependence & changeTreats one before/after story as proof of a single cause.Predicts a change but omits dates, alternative causes or count limits.Uses dated evidence and interacting mechanisms to make a bounded ecosystem prediction with observation limits.
Lab technique (food-web modeling)Builds a model that leaves out key organisms or links.Builds the model but needs help revising a claim when conditions change.Builds and revises a food-web model, distinguishing observed records, synthetic data and conditional predictions.
Integration (cross-domain)Makes no supported connection between the source and the science.Uses the source but needs help connecting evidence, writing, or limitations to the science.Independently connects History, Reading, and Writing using a cited source, appropriate evidence, a limitation, and a scientific explanation.
What “Mastery” requires
The student builds a food web, traces energy from the sun upward, and predicts a ripple effect when the system shifts — unprompted.
What does not pass
Saying a food chain shows “who’s biggest” is Developing on criterion 2 — a chain shows who eats whom, not size.
Grading it at home

The split between Proficient and Mastery is the ripple effect: mastery predicts what happens elsewhere when one part shifts. Ask “if the hawks left, what happens to the rabbits — and then the grass?”

▲ Page 4 — Anchor exemplars
Ecosystems & Interdependence · Calibration
Anchor Exemplars — To Calibrate Your Ear
Anchors
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Read these before you grade. They show what Mastery and Developing actually sound like, plus the edge cases where you should coach rather than decide on the spot.

Tracing a food web

▶ Mastery
“Willow feeds elk, and elk feed wolves. Decomposers return nutrients; energy is dissipated as heat. Our synthetic energy budget transfers 120/1000 = 12% to herbivores, then 12/120 = 10% to predators, not one universal percentage.”
▶ Developing
“A food chain is who’s biggest, so the hawk is on top. Energy is just there. I don’t think removing one animal would change much.”

Integration — Yellowstone evidence, not a single cause

▶ Mastery
“NPS counts rise from 3,915 northern-herd elk in 2013 to 6,673 in 2022. The 2016 debate includes hunting, predators, hydrology and beavers. USGS studied wolf-elk encounters, not river shape. Our synthetic willow contrast cannot show that wolves alone reshaped rivers.”
▶ Developing
“Wolves returned, so they must explain every later change.” (No matched dates, competing mechanism or observation limit.)

Edge cases — coach, don’t fail

▶ Decomposers forgotten
Builds a food web with only plants and animals. Coach: add the decomposers that recycle the dead back into the soil. Common, fixable.
▶ Arrows point the wrong way
Draws food-web arrows from the eater to its food. Coach that the arrow follows the energy — from the food to the eater. Worth a re-do, not a fail.
▲ Page 5 — Score sheet (clipboard)
Ecosystems & Interdependence · Score Sheet
Unit Score Sheet — One per student
Score Sheet
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Student: ______________________________________    Date: _______________    Guide: _________________________

Mastery criteria — circle one per row

Integration is reported separately and cannot lower the science grade or block a science demonstration pass. Science and practical criteria determine that pass.

#CriterionDecisionNotes
1Producers, consumers & decomposersDev / Prof / Mast
2Food chains & food websDev / Prof / Mast
3Energy flowDev / Prof / Mast
4Interdependence & changeDev / Prof / Mast
5Lab technique (food-web modeling)Dev / Prof / Mast
6Integration (cross-domain)Dev / Prof / Mast

Food-web lab — technique check

Used a token this session?

☐ No    ☐ Yes — for criterion: __________
Tokens left this term after this session (choose one): ☐ 3   ☐ 2   ☐ 1   ☐ None left

Dev = Developing · Prof = Proficient · Mast = Mastery · Unsure between two levels? Circle the lower one and note what a re-do would need.