Bitter Harvest: A Puerto Rican Farmer Laments U.S. Control of the Island
In 1898, the United States took control of the Caribbean island of Puerto Rico, intending to use it as a base for strategic naval operations. Most of the island's 900,000 inhabitants welcomed the end of Spanish rule. But they were divided about the U.S. presence. Some hoped links with the United States would lead to increased trade and prosperity; others wanted total independence. Some who initially welcomed the United States quickly became disillusioned. Severo Tulier, a small farmer from Vega
This page is a portal to an in-depth exploration of integrating student peer review into introductory-level geoscience classes. It includes an introduction to the concept of peer review, reasons and methods for its use, examples of electronic peer review in a geoscience context, and extensive references. This page is part of the larger Starting Point collection.
Cans and Can`ts of Teaching Evolution
This essay discusses what U.S. public school teachers are allowed to say about evolution and religious creation accounts. Eugenie Scott, the author, cites and describes the relevant legal cases that have been judged. The essay also contains links to other essays on the topic of teaching evolution in public schools.
'Connors creates a fantasy vacation in limitless circumstances by constructing a travelogue that moves from New England forests to the bottom of the sea, to outer space and to all corners of the world. The artist uses video effects such as computer-assisted animation, editing processes, and sophisticated matting techniques as metaphors for perceptual experience.' Using both miniature sets and still and moving images of various environments, Betsy Connors evokes both real and virtual spaces.
Trends of Snow Cover and Temperature in Alaska
The objective of this lesson is to compare NASA satellite data observations with student surface measurements of snow cover and temperature.
Is there water on Mars?
Is there liquid water on Mars? By experimenting with water as it changes state and investigating some effects of air pressure, students not only learn core ideas in physical science but can deduce the water situation on Mars by applying those concepts.
What's the Big Idea? Marine Biology
This fun Web article is part of OLogy, where kids can collect virtual trading cards and create projects with them. Here, they learn about marine biology. It All Started in the Ocean looks at how the world's five great oceans are linked and how scientists know that life probably started in the oceans. Mysteries of the Deep explains that scientists know less about the ocean than they do about the dark side of the Moon. There Are So Many Ways to Live in the Sea debunks the perception that the ocean
Finding Common Ground
Finding common ground helps students make informed decisions to conserve temperate forests in the United States and central China, habitat of the endangered giant panda. Through classroom activities, on-line simulations, and field investigations students learn about the important role temperate forests play in local and global ecosystems. Action steps culminate in a Class Conservation Action Plan. In the course of this curriculum students locate the biome in which they live, explore a local habi
This site helps students answer questions about dinosaurs: What makes a dinosaur a dinosaur? Where did they live? What caused their mass extinction? Students can participate in a virtual dinosaur discovery, follow milestones in dinosaur evolution, and see behind-the-scenes slide-shows of the lab environment where vertebrate specimens are prepared for exhibits and research.
Writing what you know
Do you want to improve your descriptive writing? This unit will help you to develop your perception of the world about you and enable you to see the familiar things in everyday life in a new light. You will also learn how authors use their own personal histories to form the basis of their work.
Understanding operations management
Operations management is one of the central functions of all organizations whether producing goods or services, or in the private, public or voluntary sectors. This unit will provide you with a basic framework for understanding this function and discusses the role of operations managers, in particular the importance of focusing on suppliers and customers.
Erythemal Index 2000: United States Loop
The Erythemal Index is a measure of ultraviolet radiation (UV) at ground level on the Earth. UV exists to the left of the visible spectrum and is divided into three components (UV-A, UV-B and UV-C). UV-B (290-320 wavelengths) is the most dangerous form of UV radiation that can reach ground level. Atmospheric ozone shields life at the surface from most of the harmful components of solar radiation. Chemical processes in the atmosphere can effect the level of protection provided by the ozone in the
Robust System Design, Summer 1998
This course has been conceived and designed for SDM's "product development" track to be developed in conjunction with the Center for Innovation in Product Development. It will require a substantial, team-based design project. The goal will be to define industrially relevant design projects in the SDM sponsor companies and at MIT. Teams will document their efforts in a written report and make a formal presentation of their results.
Advertising on TV1?
At the completion of this chapter you will be able to write a response regarding the commercialization of public television. While carrying out this task you will describe your position with regards to television advertising. You will describe the ideal advertising spot and use certain words to formulate your demands.
This two minute video shows how girls can braid hair.
2 Ciudades con historia
In this unit materials you will learn about the history of Spain and the important place of Arab and Jewish cultures in Spanish history. You will study a number of language points to help you talk about history and will write descriptive texts using a variety of stylistic devices.
14: Dr. Bonita Veysey, Responds to "Women, Girls & the Justice System"
Dr. Bonita Veysey of the Rutgers School of Crinimal Justice responds to "Women, Girsl & the Justice System" by Barbara Owen at Delivering Evidence-Based Gender Responsive Approaches, Day 2 of The Rutgers University Evidence-Based Initiative For Justice Policies and Practices' Conference, Evidence: The Catalyst of Change, in October 2011.
Invertible Square Matrix
This video explains how determinants can be used to determine if a square matrix is invertible. A square matrix is invertible if and only if its determinant is not zero. (2:39)
The Music Teacher