This classroom activity is part of the Smithsonian's Giant Squid Curriculum. It uses flashlights to teach students about luminescence, counterillumination, and photophores. In the scope of this activity, students will identify luminescence and brainstorm possible reasons for its biological purpose and function. The activity includes a detailed procedure accompanied with questions teachers can ask in order to promote inquiry and classroom discussion. A link directs teachers to background content
Multiple Slit Diffraction Model
The EJS Multiple Slit Diffraction model allows the user to simulate Fraunhofer diffraction through single or multiple slits. The user can modify the number of slits, the slit width, the slit separation and the wavelength of the incident light. The scale of the diffraction pattern can also be changed and a plot of the light intensity can be toggled on and off with a checkbox.
Thick Lens Model
The EJS Thick Lens model allows the user to simulate a lens (mirror) by adjusting the physical properties of a transparent (reflecting) object and observing the object's effect on a beam of light. The user can adjust the concavity of the sides, the index of refraction and its environment, and the height and width of the object as well as the size of the incident light and the horizontal position of the transparent object. Spherical aberration can be observed at large angles. You can examine
Inertial Oscillation Model
The EJS Inertial Oscillation model displays the motion of a particle moving over the surface of an oblate spheroid. The spheroid is flattened to an ellipsoid of revolution because it is rotating, just as the Earth is flattened because it is rotating. The particle is confined to motion along the surface by the spheroid's gravity; the motion parallel to the surface is treated as frictionless. The simulation shows simultaneously the motion with respect to the inertial coordinate system, and the mot
Inheritance: Standing Up to Injustice and Cruelty
FILM: This lesson plan is designed to be used in conjunction with the film, Inheritance, which illustrates the lasting effects of the Holocaust from the perspectives of both a victim of Nazi war crimes and the child of a perpetrator. Classrooms can use this lesson to explore the responsibility of standing up to injustice and cruelty. NOTE: This film contains sensitive content related to the genocide of Europe's Jews during World War II. In addition to verbal descriptions of abuses, the complet
The Cutting Edge - Exploring How Editing Affects an Author's Work
In this lesson, students examine the writing of short-story author Raymond Carver as well as their own writing to explore how editing can affect the text, content and context of an author's work.
Sampling is a computer tool designed to help biology students obtain a qualitative understanding of basic concepts related to estimation and statistics. Sampling presents the user with a group of hypothetical populations distributed throughout an area, and with tools for sampling these populations to estimate characteristics such as population size and density, the nature of each population's spatial patterning, and spatial correlations in abundance between populations. By manipulating the numb
Cardiovascular Function Lab
The CFL simulation includes two models: the original Isolated Heart Lab, which models an isolated left ventricle, and a new Closed Circulation Lab The Closed Circulation Lab models the entire circulatory loop: left ventricle, peripheral circulation, right ventricle, and pulmonary circulation. Both models include numerous input parameters that can be controlled by the user. Some of these parameters are shown in Figures 1 and 2. By manipulating these physiological variables, students can
NOAA Photo Library: America's Coastlines
America has 95,000 miles of coastline. In this collection of images from NOAA, the user can view images of America's coasts and adjacent coastal regions. Images include early Nineteenth Century sketches and drawings and modern photographs of waves, rocky shores, sandy beaches, marshes, mangroves, seaside villages, and port cities.
Access to the Internet
Using the Internet depends, in the first instance, on access to the network. The initial emergence of "the Internet" in the early 1990s, from the increasing connectivity of a series of university and government networks alongside private services like America Online, Prodigy, and CompuServe, occurred almost entirely across slow dial-up modem connections over telephone wires. Sufficient for email, Usenet news groups, transferring relatively small files, and later viewing simple web pages, slow tr
Earth Exploration Toolbook
The purpose of the Earth Exploration Toolbook is to support the use of scientific datasets, tools, and other products by the broader educational community. The Toolbook provides a collection of earth science datasets and scientific tools along with educational applications of the datasets. Each chapter in the Toolbook presents the specific datasets needed for the exercise, the analysis or visualization tools, clear instructions to the educator who would be using the dataset, and step-by-step ins
CK-12 Earth Science (CA Textbook)
CK-12 users should treat this FlexBook as an online textbook for Earth Science courses. This FlexBook underwent a thorough review conducted by practicing teachers, domain experts, copyeditors, and technical editors. It can be used in its current form, "flexed" (customized), and/or printed by the user. CK-12 supports feedback on all of its FlexBooks so that they can be continually improved and updated, while remaining aligned with state standards and curriculum guidelines. This digital textbook
CK-12 Trigonometry (CA Textbook)
This textbook covers topics such as Trigonometry and Right Angles, Circular Functions, Trigonometric Identities, Inverse Functions, Trigonometric Equations, Triangles and Vectors, as well as Polar Equations and Complex Numbers. It can also be used in conjunction with other directed courses in Mathematical Analysis or Linear Algebra as a full course in Precalculus. This digital textbook was reviewed for its alignment with California content standards.
The Land Question in South Africa:The challenge of transformation and distribution
Since the advent of democracy in 1994 issues at the heart of the land question in South Africa are how to reverse this phenomenon and how a large-scale redistribution of land can contribute to the transformation of the economy and the reduction of poverty both rural and urban Edited by Ntsebeza and Hall the volume includes contributions by leading scholars and activists such as Mercia Andrews Henry Bernstein Ben Cousins Sam Moyo and Cherryl Walker and government and World Bank officials such as
Get Ready For Abundance Culture At High School
A presentation detailing the challenges and opportunities posed by abundance culture and generation Content in education
eMarketing: The Essential Guide to Online Marketing
eMarketing: The Essential Guide to Online Marketing is a comprehensive textbook containing holistic and integrated eMarketing tactics. There is no doubt about it – the Internet has changed the world we live in. Never before has it been so easy to access information, communicate with people all over the globe and share articles, videos, photos and all manner of media. The Internet has led to an increasingly connected environment, and the growth of Internet usage has resulted in declining dist
Discovering Information Systems An Exploratory Approach
Note: This book was written in 1999 and last updated in 2003. Since then technologies have changed so the non-conceptual and more technical parts of the book may be out of date. Why Yet Another Textbook (WYAT)? There are many excellent introductory information systems (IS) texts on the market. Why then produce our own text? Interestingly enough, when we sat down to critically review the first year Information Systems curriculum, the very last thing that we wanted was to get involved in writing
Where Am I: Navigation and Satellites
How do we know where we are? What happens if you are completely lost in the middle of nowhere? Does technology provide tools for people lost in their travels? A person cannot usually determine an accurate position just by looking out a window in the middle of the ocean or vast area of land, particularly if it has not been charted before. In this lesson, students explore the concept of triangulation that is used in navigation satellites and global positioning systems designed by engineers. Also,
Lesson #036, Monday dormire = to sleep partire = to leave aprire = to open Then to conjugate these infinitives, you will drop the 'ire' and add the following endings: io = add 'o' tu = add 'i' Lei/lui/lei = add 'e' noi = add 'iamo' voi = add 'ite' loro = add 'ono' So to conjugate the verb 'dormire': io dormo tu dormi Lei/lui/lei dorme noi dormiamo voi dormite loro dormono Il mio amico dorme semp
dormire = to sleep
partire = to leave
aprire = to open
Then to conjugate these infinitives, you will drop the 'ire' and add the following endings:
io = add 'o'
tu = add 'i'
Lei/lui/lei = add 'e'
noi = add 'iamo'
voi = add 'ite'
loro = add 'ono'
So to conjugate the verb 'dormire':
Il mio amico dorme semp