Classroom Activity

Mold Growth -- Grades 5-8
The first page of the Mold Growth activity

The information in this document was accurate as of the original publication date.

Audience: Educators
Grades: 5-8


Flour tortillas have been a favorite bread item for spaceflight since 1985. The space shuttle galley does not have refrigeration for food storage; hence, all foods are stowed in locker trays at room temperature. Spoilage problems are encountered with commercial tortillas on spaceflight missions longer than seven days. A tortilla with a shelf life of six months was developed. Students can compare the growth of mold on tortillas and various types of bread. They can then graph the results.

Mold Growth Activity [104KB PDF file]

This activity is part of the Space Food and Nutrition Educator Guide.