Effects of pictures, age and experience on learning to use a computer program
This study examines the effects of pictures of screen captures and input devices on documentation for older novices. There was no main effect of pictures, but there were statistically significant interactions between the type of picture and the factors of age and computer experience. As predicted, the most optimized designs—the ones presenting screen captures—moderated the negative effects of age. We argue that screen captures help reduce two problems in the cognitive area that are especially
Author(s): Van der Meij Hans,Gellevij Mark

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A Musical Dynamics Activity
An activity to introduce children to the musical concept of dynamics.
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Biological membrane structure & organization
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Assembly of Proteins in Membranes I from the course General Biochemistry and Molecular Biology
General Biochemistry and Molecular Biology - Fall 2006. This course covers molecular biology of prokaryotic and eukaryotic cells and their viruses. Mechanisms of DNA replication, transcription, translation. Structure of genes and chromosomes. Regulation of gene expression. Biochemical processes and principles in membrane structure and function, intracellular trafficking and subcellular compartmentation, cytoskeletal architecture, nucleocytoplasmic transport, signal transduction mechanisms, and c
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Biological Membranes and Transport
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Modeling for Understanding in Science and Technology Education (MUSE)
The Modeling for Understanding in Science Education (MUSE) web site features science curricula consistent with the goals set forth in the National Science Education Standards and the Benchmarks for Scientific Literacy. The curricula and teacher's guides focus on astronomy (earth-moon-sun dynamics), evolutionary biology (natural selection) and classical genetics, with each unit unfolding over nine weeks. The product of a teacher-student-researcher collaboration and long-term research, the in-dept
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Daughter from Danang: Culture Clash, a Perspective From Vietnam
The lesson focuses on the cultural differences and the impact to family structure and dynamics. A Vietnamese mother and her Amerasian daughter are reunited after 22 years. Both have dreamed of a joyful reunion but cultural differences and years of separation cause a different result. This film is about a war in the past and making peace in the present. The topics of culture, adoption and the meaning of family will be explored in this lesson.
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Fuel Mystery Dis-Solved!
In this activity, students investigate the simulated use of solid rocket fuel by using an antacid tablet. Students observe the effect that surface area and temperature has on chemical reactions. Also, students compare the reaction time using two different reactants: water and vinegar. Finally, students report their results using a bar graph.
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Floodplain Modeling
Students explore the impact of changing river volumes and different floodplain terrain in experimental trials with table top-sized riverbed models. The models are made using modeling clay in an aluminum baking pans placed on a slight incline. Water added "upstream" at different flow rates and to different riverbed configurations simulates different potential flood conditions. Students study flood dynamics as they modify the riverbed with blockages or levees to simulate real-world scenarios.
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Disaster Dynamics
The Disaster Dynamics project is a learning environment for the study of the unique challenges surrounding natural disasters. By focusing on dynamics, this project emphasizes the complex and emergent interplay between different aspects of the design activities and the extreme event. The website has several educational role-playing simulation games such as decision making under uncertainty, complex systems and emergent properties, understanding design decisions and fostering collaborations.
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Coin
A follis (copper coin) minted prior to 539 used between the reigns of Anastasius I and Justinian I.
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Physical rights are retained by the institution. Copyright is retained in accordance with U.S. Copyright laws.

Using Molecular Weight
A previous tutorial shows how to calculate the molecular weight of a substance from the atomic weights given. On this page, we use the molecular weight to convert between the macroscopic scale (grams of a substance) and the microscopic scale (number of molecules of that substance).
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Thermochemistry
You can access the problems below via the Load Homework dialogue in the File menu of the Virtual Lab. They have been organized by concept and ranked by difficulty (A ranking of 1 denotes an easier problem; 5 is more challenging). Word files for these problems are provided so that you may edit and distribute the assignments in your classroom. The following types of problems can be found: Determining the Heat of Reactions in Aqueous Solution, Coffee, Coolant, Camping, ATP Reaction (Thermochemistry
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The Mole
You probably remember the mole from high school chemistry, but do you remember why it is useful to chemists? The goal of the following video is to give the "big picture" of the mole and its applications; information on how to use the mole in calculations can be found in another tutorial. Throughout this course, we will use the term "molecular weight" to refer to the mass of a mole of a substance (for instance, the molecular weight of oxygen (O2) is 32 g/mol). Recent textbooks refer to this as "m
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Reaction Stoichiometry
Reaction stoichiometry allows us to determine the amount of substance that is consumed or produced by a reaction. The following video considers the first part of this: how much of a reactant is consumed in a chemical reaction. Product formation is discussed elsewhere.
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Product Formation and Percent Yield
In another tutorial, we considered the amount of reactant consumed by a chemical reaction. Here, we'll consider the amount of product formed by a reaction.
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The Structures of Life
This site takes us into the world of structural biology -- a branch of molecular biology that focuses on the shape of nucleic acids and proteins (the molecules that do most of the work in our bodies). Learn about the structures and roles of proteins, tools used to study protein shapes, how proteins are used in designing new medications (for AIDS and arthritis), and what structural biology reveals about all life processes. Find out about careers in biomedical research.
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Engineering Statics
Statics is a sophomore level engineering course, offered in all mechanical and civil engineering programs. Statics forms the essential pre-requisite to a number of follow-on courses, such as dynamics and mechanics of materials, and lays the foundation for design of mechanical systems. In most institutions, Statics is taught in a traditional way with an emphasis on the mathematical operations that are useful in its implementation, but without enough emphasis on modeling the interactions between r
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Step by Step Glycolysis
You can browse the eleven steps of anaerobic glycolysis and view three kinds of information: reaction data (the enzyme, reaction type and thermodynamic data), equation and animation. Glükoosi anaeroobne lagundamine etappide kaupa. Üleminekud, reaktsiooni vaheühendid, üldinfo ning lühike animatsioon molekulimudelitega. Sobib ainevahetuse käsitlemisel üldbioloogias. You can browse the eleven steps of anaerobic glycolysis and view three kinds of information: reaction data (the enzyme, rea
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Case It! - case-study learning integrating molecular biology computer simulations and international
For introducing a framework for collaborative case-based learning in molecular biology using interactive computer simulations and web-based "poster sessions" for students via Internet conferencing.
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