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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.
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Bering Sea Climate
The Bering Sea Climate website contains time series data that measures climate and ecosystem status in the Bering Sea. The site presents data, metadata, and graphics by allowing the user to select categories and then click a button for the desired function. Data can be displayed as a list, a time series plot, or in terms of recent trends, relevance, and correlation. Measured parameters include weather, oceanographic and climate data, sea ice data, and fisheries and other biological data. The sit
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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.
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Restorer: An Example of Time-varying Data Gaps
Restorer is a visualization technique for indicating the location of missing data in a scientific visualization. Rather than filling missing data regions with interpolated data colored with the same scale as real data or simply leaving such regions empty, the restorer technique fills the regions with interpolated data colored with a color table with only luminance values. This technique allows missing data to be indicated clearly without distracting from the content of the real data.
Author(s): John Cavallo,Ray Twiddy,Shahram Shiri

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Basics of Space Flight
This training module was designed to help the user identify and grasp basic concepts associated with space travel and deep space missions. Separate sections deal with topics such as the physical environment of space (solar system, gravity, orbital mechanics), flight projects (mission concepts, system requirements, design, onboard systems and instruments), and flight operations (launch, cruise, encounter). Links to related topics are embedded in the text.
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Mineralogy Class Materials
This web site is maintained by John Winter of Whitman College, and is an on-line companion to a mineralogy course. The web site contains a course syllabus, PowerPoint presentations and an Excel tutorial. Topics included in the PowerPoint presentations include basic symmetry concepts, 2-D and 3-D translations, crystal properties, and optical mineralogy concepts. Each PowerPoint file can be downloaded and modified to suit the need of the user. This resource is part of the Teaching Petrology collec
Author(s): John Winter

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"Abdul Latif Jameel Poverty Action Lab Executive Training: Evaluating Social Programs, Spring 2009"
"This five-day program on evaluating social programs will provide a thorough understanding of randomized evaluations and pragmatic step-by-step training for conducting one's own evaluation. While the course focuses on randomized evaluations, many of the topics, such as measuring outcomes and dealing with threats to the validity of an evaluation, are relevant for other methodologies. About the Abdul Latif Jameel Poverty Action Lab J-PAL's goal is to reduce poverty by ensuring that policy is based
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Structure and function in living systems
In this publication, we provide a wide variety of resources to enrich your content knowledge of the characteristics of living things, including their diversity, extinction, and evolution.
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Fisheries Learning on the Web
FLOW is a comprehensive curriculum about the Great Lakes ecosystem with three core units: Food Web, Water and Fish. Geared toward upper elementary and middle school educators, standards-based lesson content features hands-on activities.
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Area of a rectangle. Definition and formula
A web page and interactive applet showing the ways to calculate the area of a rectangle. The user can drag the vertices of the rectangle and the other points change automatically to ensure it remains a rectangle. A grid inside the shape allows students to estimate the area visually, then check against ...
Author(s): John Page

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Area of a trapezoid. Definition and formula
A web page and interactive applet showing the ways to calculate the area of a trapezoid. The user can drag the vertices of the trapezoid and the other points change automatically to ensure it remains a trapezoid. A grid inside the shape allows students to estimate the area visually, then check against ...
Author(s): John Page

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Median of a triangle
A web page and interactive applet illustrating the medians of a triangle. The applet shows a triangle where the user can drag the vertices to reshape it. As the triangle is being reshaped, the user can see the three median lines tracking the changes, and observe that that all three always intersect ...
Author(s): John Page

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Rectangle
A web page and interactive applet showing the definition and properties of a rectangle. The applet shows a rectangle where the user can drag any vertex. The other points then move in such a way that the figure remains a rectangle at all times. A control to hide the details allows a classroom discussion ...
Author(s): John Page

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Rhombus
A web page and interactive applet showing the definition and properties of a rhombus. The applet shows a rhombus where the user can drag any vertex. The other points then move in such a way that the figure remains a rhombus at all times. A control to hide the details allows a classroom discussion where ...
Author(s): John Page

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Rhombus area formula
A web page and interactive applet showing the ways to calculate the area of a rhombus. The user can drag the vertices of the rhombus and the other points change automatically to ensure it remains a rhombus. A grid inside the shape allows students to estimate the area visually, then check against the ...
Author(s): John Page

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Right triangle
An interactive applet and associated web page that demonstrate the three types of triangle: acute, obtuse and right. The applet shows a triangle that is initially right (one angle 90 degrees) which the user can reshape by dragging any vertex. There is a message changes in real time while the triangle ...
Author(s): John Page

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Similar Triangles
An interactive applet and associated web page that demonstrate the concept of similar triangles. Applets show that triangles are similar if the are the same shape and possibly rotated, or reflected. In each case the user can drag one triangle and see how another triangle changes to remain similar to ...
Author(s): John Page

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Tetragon
A web page and interactive applet illustrating the properties of a tetragon (4 sided polygon). The applet shows a tetragon where the user can drag any vertex to reshape the polygon. User can see that the interior and exterior angles are constant in a regular tetragon, but vary in an irregular version. ...
Author(s): John Page

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Thales theorem
A web page and interactive applet illustrating Thales Theorem (the diameter of a circle always subtends a right angle to any point on the circumference). The applet shows a circle where the user can rotate the diameter and a move a point on the circumference. The applet continuously shows the resulting ...
Author(s): John Page

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Trapezoid
A web page and interactive applet showing the definition and properties of a trapezoid. The applet shows a trapezoid where the user can drag any vertex. The other points then move in such a way that the figure remains a trapezoid at all times. A control to hide the details allows a classroom discussion ...
Author(s): John Page

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