Curated OER
Chemical Changes and Biscuits
Fourth graders investigate chemical changes in everyday life settings, such as cooking. They investigate leavening which is one of the classic chemical changes that people experience. Pupils observe leavening in biscuits with the...
Exploratorium
Exploratorium: Bread Science
From Chinese baozi to Armenian lavash, bread comes in thousands of forms. Find out, on the most basic level, what chemistry ties them all together.