Enables students to examine the time course for seed imbibition and the pressure generated by imbibing seeds. Provides background information, detailed procedures, and ideas for further investigation. (DDR)

Presents an activity in which students use a discovery approach to learn about seed texture, similarities and differences among seeds, and which seeds grow on which trees. (MKR)

Describes a field trip to study, collect, and analyze galls in the field and classroom. Students hypothesize about factors that cause gall formation, develop a basic understanding of the complex and fragile interactions between plants and insects that result in the formation of plant galls, and determine the broader role of galls within the…