Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A must for a chemistry class

I ordered this for a demonstration of freezing point depression for my chemistry class. The timing is perfect for a 53 minute period with time enough to serve the ice cream and the students getting to eat it before the time is up. The one quart capacity works well for for up to 30 students. The ice cream was smooth and creamy. I suppose it will work well for family picnics and keep the kids busy.