Evaluate whether larger hunting groups always do better

What does observed wolf hunting tell us about group behavior?

Submit: An evidence record, explanation and revision.

Related lesson: Ecology: Population Dynamics

This is a teacher-led extension beyond the short lesson. The task supplies a performance opportunity; completion alone does not certify mastery, full NGSS coverage or state alignment.

Build the idea

Group behavior can affect survival and reproduction through cooperative hunting, defense or offspring care. Benefits need not rise indefinitely with group size. Observational evidence can identify patterns, but age, prey vulnerability, participation and habitat may complicate causal explanations.

Evidence and model inputs

Empirical source card: the cited Yellowstone wolf study used observations of known individuals hunting elk. It reported a nonlinear relationship between hunting success and group size and evidence of reduced individual effort in larger groups. This supports a conditional benefit, not “every added wolf always improves success.” NPS separately describes cooperative care and territorial behavior.

Keep actual observations, published findings and invented model cases labeled separately. If a source or required equipment is unavailable, pause that part with a teacher; do not invent results.

Materials and preparation

Paper, graph paper or spreadsheet, and the linked readings.

Grade-level scope

Use empirical evidence; do not substitute fictional performance percentages for published observations.

Do the work

1. Read the study abstract and NPS account; record species, behavior, measured outcome and study setting.
2. Separate the reported hunting result from broader descriptions of care or defense.
3. Construct an argument explaining how cooperation can help and why additional individuals may not add equal benefit.
4. Identify at least two possible confounders and what individual-level observations help address them.
5. Evaluate a rival claim that group size alone determines survival; revise it to match evidence limits.

Learner worksheet

Write on paper or type here and print. Entries stay in this page’s memory and are lost when you leave or reload; they are not saved or submitted.

Check your reasoning

1. Does a nonlinear result support unlimited benefit?
2. Is being near others sufficient evidence of cooperation?
3. Does this elk study establish the same pattern for every prey?
4. Why observe identified individuals?

Teacher review guide

Review the actual deliverable and discuss the reasoning. For each criterion, use 0 when evidence is absent or fundamentally incorrect, 1 when partly supported with a material error or omission, and 2 when accurate, supported and complete for the stated task. Maximum 8 points is a task score, not a proficiency certification. Give feedback and allow revision.

1. Uses accurately attributed empirical evidence.
2. Links a behavior mechanism with survival or reproduction.
3. Evaluates a rival interpretation and confounders.
4. States species, outcome and context limits.

Sources and standard reference

• Official NGSS HS-LS2-8 performance expectation — inspect the practice, core idea, crosscutting concept and assessment boundary.
• USGS original wolf hunting research
• NPS wolf ecology

Instructional text and hypothetical cases are original. Linked source readings supply published evidence where specified. Teachers should judge fit with their course and state requirements.