Sourdough Science: Discover the Tiny World That Makes Bread Rise

Make a starter from scratch and explore yeast, bacteria, fermentation, carbon dioxide and gluten. This 22-page printable study for ages 7–12 includes feeding and care instructions, a starter journal, measurement activities, an optional temperature experiment, bread history, review, answers and an optional no-knead bread recipe. Allow about two weeks with regular starter care and adult supervision. US Letter printable PDF for household homeschool use. No physical item will be shipped.