This unit covers basic research methods in an easily accessible way, and includes research tips and pros and cons for each method. It also takes learners through a step-by-step approach to planning research.
In our daily lives we use hundreds or even thousands of products and services. They are all designed, some with more success than others. The ‘Delft Design Approach’ is a structured approach that helps designers to tackle complex design challenges: from formulating a strategic vision, to mapping user behaviors, their needs and their environment, to developing and selecting meaningful proposals for products and services.
DDA691x offers a college-level introduction to the Delft Design Approach through lectures and exercises on design fundamentals and 6 methods. You will understand basic models and concepts that underlie the Delft approach. You will also develop the capability to use 6 basic methods in a design context. You will do so by applying the methods to realistic design challenges and by reflecting on your own performance by comparing it to that of expert designers as well as through peer discussion.
We now know how to analyze pure compounds, but what if we have a mixture? Spectrophometry becomes quite complex when dealing with multiple species of compounds at once. In order to purify a compound we can separate if from a mixture based on its intrinsic chemical properties. Remember that fluorescein is negatively charged at a pH above pKa of the carboxyl group. We can take advantage of this fact and use its attraction to positive charges to separate it from other molecules. In ion-exchange chromatography, we will use a stationary phase with a positive charge, allowing negatively charged molecules to bind and positively charged species to flow through. We can then disrupt this interaction and retrieve our now-purified molecule, and use spectrophotometric analysis of our purified fractions to determine how well we were able to separate our molecules.
This free, online article, developed for elementary teachers, describes a Kindergarten polar science, standards aligned, unit centered on The Polar Express developing literacy, math, and science skills.
- Environmental Science
- Material Type:
- Ohio State University College of Education and Human Ecology
- Provider Set:
- Beyond Penguins and Polar Bears: An Online Magazine for K-5 Teachers
- Mary LeFever
- Date Added:
Research Methods in Psychology is intended to provide a fundamental understanding of the basics of experimental research in the psychological sciences.
Research Methods in Psychology adapted by Michael G. Dudley is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 license.
Research Methods in Psychology is adapted from a work produced and distributed under a Creative Commons license (CC BY-NC-SA) in 2010 by a publisher who has requested that they and the original author not receive attribution. This adapted edition is based on an adaptation produced by the University of Minnesota Libraries Publishing through the eLearning Support Initiative. This adapted edition was created by Michael G. Dudley with support from the Palomar College Foundation.
This adaptation has significantly altered the original 2010 text and removed images. This work is made available under the terms of a Creative Commons Attribution-NonCommercial-ShareAlike license.
Syllabus for Survey of Educational Research Methods course that uses the open textbook Social Science Research: Principles, Methods, and Practices: https://scholarcommons.usf.edu/oa_textbooks/3/
This course provides students with a survey of methods used in educational research, including qualitative, survey, quantitative group, correlational, single case, and action research. The role of systematic approaches to research in education is considered, and an overview of multiple ways of conducting research in education is provided. Emphasis will be placed on developing students’ competence in locating, evaluating and using published research to inform decision making in educational, clinical, and social settings. Guidelines for evaluating educational research that use the various methodologies are provided. Students will evaluate and critique published research articles.
Previously, we showed how different compounds absorb light. The chemical structure of a molecule determines exactly how much light it absorbs, as well as which wavelengths are absorbed. It stands to reason then, that by removing an atom from a molecule, we can change the way it absorbs light. In this experiment, we will relate these two concepts by measuring the absorbance of a molecule under acidic and basic conditions. The changing pH will allow us to find how strongly a specific hydrogen is attached to our molecule, and we will observe how the changing chemical structure affects the observed absorbance. Afterwards, using mathematical analysis, we can experimentally determine the pKa, or affinity of our hydrogen to our parent molecule.