An updated answer key including guidance for the CER Writing Activity, along with the gel analysis, multiple-choice answers, and short answer prompts. Optimized layout to prevent text cutoff and stranded phrases. Guidance included for all 20 questions.

An updated interactive notebook-style worksheet including the narrative, DNA gel analysis, Punnett square practice, 20 comprehension questions, and a new PART 2: CER Writing Activity. Layout optimized for 4 pages with improved visual clarity and scientific accuracy. Darkened text for maximum legibility. Each page is a dedicated case file section. DNA bands are monochrome to provide a genuine matching challenge.

Comprehensive answer keys and teacher facilitation notes for all student materials in the Wild Web Balance lesson.

A data-collection worksheet for the "Resource Runner" simulation, allowing students to track their survival through various environmental scenarios.

A quick individual assessment checking for understanding of the 10% rule, the impact of water scarcity on food chains, and the role of invasive species.

A high-engagement graphic organizer where students map an ecosystem food web and perform "What If" impact analysis on human-caused environmental disruptions.

A visual presentation covering the energy pyramid, the 10% rule, and the negative impacts of water diversion and invasive species on ecosystem balance.