Describes an art lesson where students used watercolors to paint a flower bouquet arranged in a vase. Explains that the students viewed examples of flower bouquets by artists such as Vincent van Gogh and Odilon Redon. Discusses, in detail, the process of creating the artworks. (CMK)

Examines how young children in preschools use the criterion of movement to determine whether an object, in this case plants, is living or non-living. Reports that children presented a conceptual change classifying the plant as alive using explanations including dependence on environment and other functions. Includes references. (CMK)

A demonstration that can be used to illustrate diffusion and osmosis is presented. Discussed are materials, procedures, and an explanation for the effect. (CW)

Discussed is the evolution of aerobic organisms from anaerobic organisms and the accompanying biochemistry that developed to motivate and enable this evolution. Uses of oxygen by aerobic organisms are described. (CW)

Provides the electronic circuit schematic for the construction of a green vegetation sensor, the directions for its use, and suggestions for student projects. (JJK)

A collection of creative pupil activities in science lessons is presented, discussed, and illustrated. The activities include drawing, acting, gaming, and modeling. The relative merits of work of the types described are analyzed. (KR)

The construction and stocking of an in-class pond is discussed. Suggestions for eight activities using the pond are provided. A list of 15 references is included. (CW)

Describes using tetrazolium chloride as a chemical test for seed germination. (PR)

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)

Discusses and presents activities for learning about plant fossils. The first activity uses teacher-prepared "fossils" made from plaster of Paris. Students attempt to classify the plants. In the second activity, students observe actual plant fossils. (PR)

Investigates whether the use of the combination of lecture, discussion, and computer-assisted instruction (CAI) significantly improved students' attitudes toward biology and their understanding of reproduction in plants and animals. Studies grade 11 Jamaican female students (n=77) from two traditional high schools in Kingston. (Contains 19…

Explains the procedure for creating a field guide for high school students. Provides field guide questions and a sample format of the guide's insect page. (YDS)

Describes a science activity on polyploidy targeting middle and high school students which can be used to discuss topics such as chromosomes, cells, plant growth, and functions of stomates. Integrates mathematics in data collection. (Contains 13 references.) (YDS)

Without experience, students struggle to understand climate change. Uses the school environment as a starting point to explain the causes of climate change and involves students in activities concerning indoor and outdoor environments. (YDS)

Plant tropisms--their directional movement in response to stimuli--are a fundamental concept in plant science and excite students because they are the observable signs of life in plants. Unfortunately, the precollege teaching literature is full of tropism misconceptions. An inexpensive clock clinostat is invaluable for student gravitropism and…