This document is a science learning guide that helps students practice asking and refining scientific questions at different levels of rigor. It is organized into the 5E instructional model (Engage, Explore, Explain, Elaborate, Evaluate). Performance Expectations: Students are expected to ask questions that arise from observation, determine which can be tested scientifically, and challenge arguments or data interpretations. Questions are categorized by rigor levels: Rigor 1: Clarify and seek