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Lesson Plan of Soluble & Insoluble Solids General Science Grade IV Students’ Learning Outcomes ·          Explain how one state of matter (solid, liquid & gas) dissolves in other. Information for Teachers ·          Common salt and sugar when added in water disappear to give mixtures. This is called dissolving a solid into liquid. ·          Similarly a gas (CO 2) can also dissolve in liquid water, like soda water/cold drink. ·          The materials that dissolve in water are called soluble materials. The materials that don’t dissolve in water are called insoluble materials. Glucose and salt are soluble materials. Material / Resources Water, sugar, glass, spoon, common salt, chalk powder, soil, glucose, lemon juice and vinegar, textbook Worm up activity ·          Half fill the glass with water and add a spoon full of sugar in it. Stir it with a spoon. ·          Ask the students: What happens to the sugar? Where is it gone? Can you see it?