To provide the opportunity for students who are blind or visually impaired to replicate the process used to cast and mold molten metal, glass, and plastics, or liquid clay in industrial processes
Commercial gelatin prepared with a reduced amount of water creates a safe, easier to handle, substitute to replicate molten materials. The liquid takes on the shape of the mold as it hardens.
If time is a factor the teacher can prepare the gelatin mixture in advance. A recipe such as Jello Jigglers® creates a thicker liquid that forms firm castings. A convenient way to heat hot water for this experiment is to use a Hot Shot®. The pre-measured water is poured in to the top of the appliance; a button is pushed to begin the heating process; then the heated water is dispensed directly into the container. This works well for students who lack the vision or hand skills to pour boiling water.
Please note: In a science lab, food items are regarded as chemicals and are not for consumption.
By Kate Fraser
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