By dropping clay spheres from multiple controlled heights, students record the corresponding (7) diameter changes to establish a clear mathematical trend between collision speed and impact force. Because classroom drop heights cannot achieve true cruising speeds, students use their graph trends to extrapolate (8) destructive forces at natural flight velocities. Finally, students evaluate window mitigation patterns, determining how structural components (9) like dot grids and decals spaced two inches apart warn birds and prevent fatal collisions.
Pedagogical Notes & Common Student Pitfalls
NYS Regents Life Science Teacher Guide • For the Birds Teacher Key • Page 1 of 2
Part II: Exemplar Answers & Evaluation Criteria
Scoring Rubric
Task 1: Evaluating the Laboratory Model Simulation (3 pts)
Model Element Real Phenomenon Exemplar Limitation / Analysis
Molded Clay Sphere Avian body mass & tissues Limitation: Clay is uniform and plastic; real birds have hollow bones, organs, and air sacs that fracture/tear differently than solid clay.
Vertical Drop Horizontal flight into glass Limitation: Gravity causes acceleration straight down, whereas real birds fly horizontally under muscular propulsion with varying angles of incidence.
Classroom Floor Vertical architectural window Limitation: Concrete or tile floors have virtually zero elasticity/give, whereas large glass panes can flex slightly, dissipating small amounts of energy.
Task 2: Data Interpretation & Extrapolation Exemplar (3 pts)
Exemplar Student Response:
"Classroom ceilings limit drops to approximately 1.5 to 2 meters (\(\sim 5\text{--}6\text{ m/s}\)), which is far below natural avian flight velocities (\(10\text{--}25\text{ m/s}\)). Dropping clay masses from higher stories creates physical hazards and equipment damage. By establishing a proportional mathematical trendline between drop velocity and clay deformation in controlled lab conditions, scientists can safely extrapolate the curve to predict blunt trauma at true high-speed flight velocities without creating physical classroom hazards."
Task 3: Engineering Solutions & Biodiversity Exemplars (6 pts)
Structural Components Selection (3 pts):
1. Ceramic Frit Dot Matrix: Baked onto the exterior glass surface spaced 2 inches apart. Birds perceive the dots as a physical barrier too narrow to fly through while preserving human visibility from within.
2. UV Patterned Decals / Coatings: Birds see ultraviolet wavelengths invisible to human vision. UV-reflective stripes or grids signal an obstruction to birds while maintaining transparent architectural aesthetics for human occupants.
Biodiversity Synthesis Response (3 pts):
Window strikes indiscriminately kill migratory songbirds, raptors, and hummingbirds. Because birds provide vital ecosystem services—including insect predation, seed dispersal, and pollination—preventing window mortality protects avian population densities and trophic food webs, directly preserving local and global biodiversity.
Regents Assessment Rubric
Level 4: Exemplary (90-100%)
All 9 cloze terms correct. Analyzes all 3 model limitations clearly. Accurately explains extrapolation and connects 2x4 rule to biodiversity conservation.
Level 3: Proficient (80-89%)
7-8 cloze terms correct. Identifies 2-3 model limitations. Explains why extrapolation is used and identifies 1 viable window engineering solution.
Level 2: Developing (65-79%)
5-6 cloze terms correct. Identifies 1 model limitation. Vague explanation of extrapolation; mentions window stickers without referencing spacing rules.
Level 1: Novice (<65%)
Fewer than 5 cloze terms correct. Incomplete analysis table; does not articulate the connection between window collision physics and biodiversity.
NYS Regents Life Science Teacher Guide • For the Birds Teacher Key • Page 2 of 2
