Get slimed! Make colorful, worm-like gels by combining two solutions; sodium alginate from seaweed and the salt, calcium chloride. Investigate a cross-linked polymer. The Classroom Slime Kit contains enough to make slime for the whole classroom. Our Slime-Making Kits have everything you need for making perfect slime. Polyvinyl Alcohol Bags can be dissolved in hot water to make a polyvinyl alcohol solution, which can in turn be made into slime.