This document outlines a unit plan for a 4-week inquiry on mixtures and solutions. Week 1 focuses on separating mixtures through investigations on mixing and separating solid-liquid mixtures and dry mixtures. Week 2 examines reaching saturation points of salt, citric acid, and mystery solutions. Week 3 involves student-led experiments and analysis. Week 4 concentrates on concentration through recipes, salt solutions, and mystery solutions. The unit emphasizes cause and effect, comparing and contrasting, making inferences, and identifying main ideas and details through ongoing journals, response sheets, teacher observations, and a final assessment.