Presents three activities using pearl onion bulbs to illustrate plant growth and plant propagation under various conditions. (WRM)

Presents several activities designed to teach students about the characteristics, classification, life cycle, and uses of the luffa (gourd). (WRM)

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)

Uses diagrams and text to describe four activities involving trees designed to aid students in better understanding responses to seasonal changes (ZWH)

Discusses the importance of maintaining links between school children and the outdoors. By creatively looking for outreach programs and simple animal activities, teachers can keep students' innate interest in nature alive. Studying nature can also teach students about interdependence. (SAH)

Presented is a discussion of the natural history of the dandelion. Three activities involving study of dandelions are presented. Each activity includes discussion of purpose, skills, and materials needed. (RE)

Describes a simple and inexpensive way to construct two small growth chambers for studying phototropism in the science classroom. One chamber is designed to illustrate how plants grow around obstacles to reach light and the other to illustrate directional light responses. (HM)

Describes an ecology exercise suitable for secondary school students in which the school grounds may be used to study communities in association with woody plants. (JR)

Introduces the pea plant experiment targeted to determine the effects of Knop's solution, a solution containing all the necessary minerals, on plant growth. Compares two groups of pea plants, one treated with Knop's solution and one treated with demineralized water. (YDS)

Presents a science activity to help students to explore the concept of primary productivity by growing lawn grass in the classroom. (HM)

A discussion of the historical background of man's use of seeds is followed by an explanation of some of the basic concepts relating to seeds. Collecting seeds is discussed, and eight classroom activities are described. (DT)