Describes a science experiment involving plant seeds where students observe the germination and plant growth. (YDS)

Focuses on the curriculum movement. Discusses the educational conditions under which new courses would be developed. Explains the differences between the new science courses and traditional courses. First published in 1962. (YDS)

Explains the advantages and disadvantages of verification experiments in classrooms from the secondary school science teacher's point of view and discusses the reasons for difficulties and resistance in replacing verification experiments with inquiry experiments. (Contains 19 references.) (YDS)

Presents three biology activities involving insects that demonstrate basic ecological principles related to the forensic sciences. (Contains 15 references.) (YDS)

Assesses the effectiveness of two generative learning strategies, concept mapping and laboratory experiments, to determine if one is more effective with individual learners or learning groups in science classrooms. Indicates that students starting with concept maps showed higher achievement than students beginning with laboratory experiments, and…

Compares various detector technology for measuring the direction and magnitude of magnetic fields. (CCM)

Describes an experiment that involves the determination of the enthalpy change for a single reaction of the decomposition of aqueous hydrogen peroxide. (CCM)

Notes that water can be an important medium for science, math, and language activities and how encouraging young children to think about water helps them understand important concepts about how the world works. Offers detailed instructions for 13 classroom activities that use water to demonstrate a variety of concepts. (TJQ)

Uses a software package to prepare students for an organic synthesis using the Horner-Wittig reaction and investigates the role of the software in student learning. (Author/YDS)

Explains the redux chemistry of the experiment of cleaning pennies with a vinegar-salt solution. (Contains 12 references.) (YDS)

Uses DNA laboratories to apply three different active learning strategies to undergraduate education: (1) teaming students; (2) opening laboratories; and (3) linking experiments. Discusses the effectiveness of the stream method on student attitudes and understanding. (YDS)

Summarizes the recent research on pollen germination and introduces some basic studies on pollen tube growth that can be conducted in a secondary school laboratory. Discusses the use of a light microscope and refrigerator to study pollen. (Contains 13 references.) (Author/YDS)

Rx values in thin-layer chromatography (TLC) depend strongly on the solvent saturation of the atmosphere above the liquid in the TLC developing chamber. Presents an experiment illustrating the potentially dramatic effects on TLC Rx values of not equilibrating the solvent atmosphere during development. (ASK)

Presents a science activity focusing on student ideas about plants and builds a terrarium based on students' ideas about the conditions of plant growth and cycling. (YDS)

Explains a health science activity concerning Howard Florey's experiment and the discovery of penicillin. Uses a mouse's point of view to conduct the activity and asks students to present information about Florey's research as if a participating mouse is talking. (YDS)