Star Library: What is the Shelf Life?
The Food and Drug Administration requires pharmaceutical companies to establish a shelf life for all new drug products through a stability analysis. This is done to ensure the quality of the drug taken by an individual is within established levels. The purpose of this out-of-class project or in-class example is to determine the shelf life of a new drug. This is done through using simple linear regression models and correctly interpreting confidence and prediction intervals. An Excel spreadsheet
HazDat, the Agency for Toxic Substances and Disease Registry's (ATSDR) Hazardous Substance Release/Health Effects Database, is the scientific and administrative database developed to provide access to information on the release of hazardous substances from Superfund sites or from emergency events and on the effects of hazardous substances on the health of human populations. The following information is included in HazDat: site characteristics, activities and site events, contaminants found, cont
Flow Rates of Faucets and Rivers
In the Flow Rate Experiment, students perform hands-on experiments with a common faucet, as well as work with the Engineering Our Water Living Lab to gain a better understanding of flow rate and how it pertains to engineering and applied science. Students calculate the flow rate of a faucet for three different levels (quarter blast, half blast, and full blast). Building on these calculations, students hypothesize about the flow rate in a nearby river, and then use the Engineering Our Water Livin
A Framework System for Intelligent Support in Open Distributed Learning Environments
Recent trends in the design of learning support systems are characterized by considering group interaction, by combining intelligent support with interactive learning environments, by providing reusable domain-independent components, and by using agent-structured architectures. Taking these trends into account, an open framework system has been developed for integrating distributed intelligent support components with an interactive and collaborative learning environment. Work in shared activity
A methodological alternative to media comparison studies: Linking information utilization strategies
Literature reviews on hypermedia learning have yet failed to show consistent positive effects of learner-controlled nonlinear information access. We argue that a possible reason for this lack of evidence in favor of hypermedia learning results from the fact that not sufficient attention is paid to the strategies of information utilization learners deploy. The few studies that do analyze these strategies fail to link them to an instructional approach, which hampers a deeper interpretation of stra
Grid and Peer-to-Peer middleware for Cooperative Learning Environments
This paper presents the work done by the research group of the Open University of Catalonia within the coordinated project towards the definition of adequate grid and peer-to-peer middleware for cooperative learning environments. The main results of our research consist in designing a layered framework for modelling online collaborative learning interactions which in turns leads to the development of a computational platform, called Collaborative Learning Purpose Library (CLPL), that can be used
A Comparison of Model-Tracing and Constraint-Based Intelligent Tutoring Paradigms
Two approaches to building intelligent tutoring systems are the well-established model-tracing paradigm and the relatively newer constraint-based paradigm. Proponents of the constraint-based paradigm claim that it affords performance at levels comparable to that of model-tracing tutors, but with significantly less development effort. We have built both a model-tracing and constraint-based tutor for the same problem domain (statistical hypothesis testing) and report on our findings with the goals
Presents major nutritional problems that influence the health, survival, and developmental capacity of populations in developing societies. Covers approaches implemented at the household, community, national, and international levels to improve nutritional status. Explores the degree to which malnutrition can be prevented or reduced prior to achieving full economic development through targeted public and private sector interventions that address the causes of malnutrition.
Virtual Maths, Brick Density, Water Displacement method video
Video demonstrating how to measure the density of a brick using the water displacement method.
A History of the County of Middlesex: Volume 2 General; Ashford, East Bedfont with Hatton, Feltham,
This volume has some general topics for the whole ancient county of Middlesex except the city of Westminster, and articles on 7 parishes. Part of the area now lies within the London Borough of Hounslow, the rest within London boroughs in Surrey
Papers of George Washington
In this section of our site, we have endeavored to provide teachers and students with useful primary and secondary materials to help foster understanding of early America through the life of George Washington. These resources can work on several levels. First, the twelve slides themselves provide a general chronology of the life of George Washington as well as secondary information on the larger historical context. Ideally, this background material reiterates your own class text readings and dis
KS2 Numeracy SATs revision 5
This module tests both money and time. There are levels with practice questions, some with word problems and some with mixed examples. The final levels test everything - one with 20 questions and one with 50! The order of questions is randomised. Progress is tracked and numerous awards given for achievement at each level.
This is a large quiz on computer basics divided into 10 levels. The levels cover topics such as Windows XP, using Microsoft Office 2000, using the internet and using email. The module contains the following levels: Computer Basics Windows XP Office2000 The Internet Email Internet Safety Access Excel Word2000 Powerpoint
Health Care Communications: The Process of Pharmaceutical Care
The module contains the following levels: 9 Steps of the Pharmaceutical Care Process 8 Categories of Drug Related Problems Components of the PharmD's Plan for Drug Therapy Resources for the PharmD's Plan for Drug Therapy
An exercise in advanced English vocabulary
The module contains the following levels: Multiple choice only Multiple choice and fill in Fill in only
Distinguished Innovator Lecture Series: Greg Gianforte
Greg Gianforte, CEO, President, Chairman and Founder of Right Now Technologies Greg Gianforte has led RightNow from its founding in 1997 to 9 consecutive years of revenue growth, 19 consecutive quarters of cash-flow positive performance and a successful IPO. His market vision, leadership, entrepreneurial philosophy and commitment to ethical business practices has enabled RightNow to consistently grow?during a period when many other software companies have stumbled?and to achieve remarkable leve
Musical Games (Part 1)
Two musical games for use with children at all levels. One game is based on rhythm patterns while the other is based on responding with movement.
Derivation of Knowledge Structures for Distributed Learning Objects
Knowledge space theory (Doignon & Falmagne, 1985; Albert & Lukas, 1999; Doignon & Falmagne, 1999) offers a rigorous and efficient formal framework for the construction, validation, and application of e-assessment and e-learning adaptive systems. This theory is at the basis of some existing e-learning and e-assessment adaptive systems in the U.S. and in Europe. Such systems are based on a fixed and local domain of knowledge, where fixed means that the domain does not change in time and local ref
Social Capital and the Distribution of Household Income in the United States: 1980, 1990, and 2000
Social capital is a person or group's sympathy or sense of obligation for another person or group. The objects of sympathetic feelings have social capital. Those holding sympathetic feelings for others provide social capital. Because social capital providers internalize the consequences of their choices, they trade with each other on different terms and at different levels that would occur in arm's length transactions, all other things equal. But changes in the terms and level of trade al
This lesson introduces the ways that engineers study and harness the wind. Students will learn about the different kinds of winds and how to measure wind direction. In addition, students will learn how air pressure creates winds and how engineers build and test wind turbines to harness energy from wind.