Astronomy Interactives This site provides ranking tasks for teaching introductory astronomy. Pencil-and-paper versions as well as computer-based versions are available grouped by topic. New materials will be added as the computer-based versions are completed. It is anticipated that the pencil-and-paper versions will be photocopied for students and either used in the classroom or assigned as homework. The computer-based versions are intended as formative assessment tools to be used by students outside of class and have considerable utility in distance education courses.
how to convert a chest freezer to a fridge « John's Running and Living My chest fridge conversion uses an average of only 8 watts, down from 100 watts (peak of 224), a 92 percent reduction of electricity use. Here’s how you can do the same thing. MATERIALS temperature switch $16.78 from Ebay push on connectors – $1.70 Home Depot three wire extension cord, or wall box and plate you will need to use the 14 gauge wires either way micro screwdriver – $1 Dollar Store or Harbor Freight new or used 5 to 7 cubic foot chest freezer $50 to $200 WIRING with extension cord Cut a 6 inch section out of the middle of the extension cord. There need to be black, white and green wires that can be separated and stripped. Complete the wiring with the push on connectors.
ClassAction Announcement - We normally simply add new questions to the bottom of a module to prevent the numbering associated with questions from changing. However, rarely a complete reorganization is appropriate to group questions of a similar topic near each other or to add a large amount of new material. Please note that during May (and likely into August) of 2013, substantial revisions are being performed on the Jovian Planets (and moons) Module.Please note that during May (and likely into June) of 2013, substantial revisions are being performed on the Debris Module.Please note that during April of 2013, substantial revisions were performed on the ExtraSolarPlanets module. The Binary and Variable Stars and the Coordinates and Motions Modules were both reorganized around April of 2012. ClassAction v2 is a browser for all ClassAction questions.
Virtual Laboratories for Introductory Astronomy by Michael Guidry, University of Tennessee and Kevin M. Lee, University of Nebraska The Brooks/Cole Virtual Astronomy Laboratories consist of 20 virtual online astronomy laboratories (VLabs) representing a sampling of interactive exercises that illustrate some of the most important topics in introductory astronomy. The exercises are meant to be representative, not exhaustive, since introductory astronomy is too broad to be covered in only 20 laboratories. Material is approximately evenly divided between that commonly found in the Solar System part of an introductory course and that commonly associated with the stars, galaxies, and cosmology part of such a course. Lab Descriptions Screenshot of portion of the Ptolemy's Model Simulator. Solar System Models Module The NAAP Solar System Models Module introduces the universe as envisioned by early thinkers culminating in a detailed look at the Copernican model. Screenshot of portion of the Seasons and Ecliptic Simulator. Basic Motions and Seasons Module This module covers three different, but related areas.
Motions of the Sun Simulator - Calculating Solar Potential in Portland, Maine February 15th, 2010 by ReVision Energy We stumbled across an incredibly useful tool that allows you to calculate the path of the sun on any given day of the year based on your latitude. This tool, part of the The Nebraska Astronomy Applet Project (NAAP), will even give really geeky data like the sun’s altitude and azimuth, and allows you to animate the cycles of the sun! Using the tool, we can plug in our latitude (roughly 43N here in Portland, Maine), program the day to February 15, set ourselves facing south and voila! Space Math @ NASA Mathematics Grade 6 Chapter 1 - Dividing Multi-digit Whole Numbers [Click Here] - Students will learn about satellites that gather data about Earth systems through reading a NASA press release and viewing a NASA eClips video segment. Then students will practice dividing multi-digit numbers using satellite data related to Earths ozone layer. Featured NASA Missions: Aura Chapter 2 - Translating between Tables and Expressions [Click Here] - Students will learn about black holes through reading a NASA press release and viewing a NASA eClips video segment. Then students will use tables and mathematical expressions to compare black hole sizes and temperatures. Featured NASA Missions: Chandra, Swift Chapter 3 - Understanding Decimals [Click Here] - Students will learn about the Cassini mission and its exploration of Saturns moons through reading a NASA press release.
A Recipe for a Hugelkultur Raised Bed Permaculture Research Institute I’ve been wanting to do a hugelkultur bed ever since I saw an article about a village store garden where people could walk around these really tall raised beds picking their veggies without bending. Hugelkultur is a Central European-style raised bed which uses rotting wood as its foundation. Toby Hemenway mentions it in Gaia’s Garden, offering the hot tip that he can start potatoes a month early in this kind of bed.