Struggling to get students to understand LD50, ED50, and dose-response curves? This APES graphing lab activity gives students hands-on practice with realistic data so they can confidently analyze toxicity, interpret graphs, and connect concepts to environmental science. What’s Included? LD50 & ED50 graphing activity (4 compounds) Data analysis questions Built-in multiple-choice quiz Teacher answer key Print + digital options Student Learning Interpret dose-response curves Identify LD50