This USGS report presents an overview of the interactions between ground water and surface water in a variety of terrains. It serves as a general educational document with the intention of helping agencies understand the basic science involved in the management and protection of aquifers and watersheds. The report describes the natural processes of ground water and surface water interactions and the ... Full description.

This website, created and maintained by the Natural Resources Conservation Service, contains an interactive map containing climate information for each state. Users can click on states and find information and data for every county in every state. Data includes daily mean temperature, frost free days, growing season, and monthly temperature and precipitation. Users may also download data from this ... Full description.

The Natural Resources Conservation Service (NRCS) installs, operates and maintains an extensive, automated system to collect snowpack and related climatic data in the western United States called SNOTEL (for SNOwpack TELemetry). SNOTEL sensors collect hourly data on temperature, precipitation and snow water equivalent. Data can be displayed as tables or graphs for individual stations, drainage basins ... Full description.

Provides a brief review of many aspects of algebraic language and use, from symbol sets and fractions to exponents and factoring. Intended as a reference for students already familiar with algebra, it is the first section of the online text Introductory Statistics: Concepts, Models, and Applications. This resource is part of the Teaching Quantitative Skills in the Geosciences collection. http://serc.carleton.edu/quantskills/ ... Full description.

Once a website for online, one-on-one tutoring, Technical Tutoring is now a repository of help pages developed by Phil Otken. Examples and lessons on many aspects of calculus, algebra, trigonometry, and basic chemistry. Each lesson includes a concise discussion and step-by-step intructions, formulas, and figures. This resource is part of the Teaching Quantitative Skills in the Geosciences collection. ... Full description.

This site features a menu of lessons and reference material on calculus concepts. Featured are several definitions of the derivative, treatments of discontinuity, and discussion of logarithms, integration, and antiderivatives. The sections are presented with clear notation and examples. Full description.

Beginning with a general review, this site provides a good refresher on basic trig identities, functions and angles. Good diagrams for unit circle and triangle trigonometry. Full description.

This module is designed to allow students to learn about igneous rocks at their own speed using images of hand samples and rock outcrops in their natural settings. Topics covered include the common igneous rock types, igneous textures, and intrusive rock bodies. Each topic has instructive text and several images. The site also features a self-quiz with 17 questions about 12 hand sample pictures. This ... Full description.

The UC San Diego Webshaker is a live earthquake experiment conducted over the internet. The user can select a historic earthquake or design an earthquake by specifying the frequency, amplitude, and duration. The shake table delivers base motion to the test structure in the same way that an earthquake shakes buildings and other structures. A live video broadcast and precise measurements from sensors ... Full description.

This site is an e-paper that describes a structured approach to inquiry-based learning using the World Wide Web as a primary information resource. Specifically, the paper addresses an 8-step process that begins with an essential question and ends with a product produced by students, typically completed in a cooperative setting. The paper also discusses the skills required by both student and teacher ... Full description.