NGSS 5-PS1-2 Conservation of Matter Aligned 5E Lesson Plan is designed to take students on an engaging journey starting with movie scenes from the Wizard of Oz. Students view a movie clip and are asked to identify gases, solids, and liquids they see. The students are then asked the most important question for NGSS 5-PS1-2: Does the total weight of substances change if they are heated, cooled, mixed together, or rearranged into different shapes? . The students are then asked to explore