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Lesson on Calculating the Post-Mortem Interval Courtesy of Patti Bertino’s email post. The postmortem interval (PMI), also known as a time since death estimate, aids forensic scientists in death investigations. This lesson will introduce your students to the processes of decay and decomposition, forensic pathology, and forensic entomology. Printables from A to Z from Homeschool Creations - Homeschool Creations The printables shared on this site are FREE of charge and you are welcome to download them for your personal and/or classroom use only. However, free or purchased printables are NOT to be reproduced, hosted, sold, or stored on any other website or electronic retrieval system {such as Scribd or Google docs}. My printables are copyright protected and I appreciate your help in keeping them that way. :) If you download and use some of my printables and then blog about them, please provide a link back to my blog and let me know ~ I’d love to see how you are using them! Please be sure to link to the blog post or web page - and not directly to the file itself.

Systems Thinking Games Systems Thinking Games, developed in partnership with Filament Games, are designed to be used by youth and educators to assess systems thinking skills both in the classroom and in afterschool contexts. A precursor to the GlassLab, this project brings together teachers, assessment experts and game designers and developers to collaboratively design and build a suite of games with data tools that support teachers in evaluating the way players approach problem-solving, and the strategies players use in understanding and interacting with complex systems. Currently, research is underway to develop assessment frameworks that yield valid and reliable assessment measures across the suite of digital games. To learn more, please join the Institute’s community for updates on our progress.

Free Game to Practice Chemistry Knowledge! Also available for your iPhone/iPad/iPod here or Android device here. Brought to you by the Chemistry Department at Stetson University. The entire content of this web site is copyrighted by Stetson University under the copyright laws of the United States (Title 17, U.S. Code). You are welcome to repost for educational purposes. Lle Chatelier principle This law is known to every Chemistry student as the Le Châtelier principle . His original formulation was somewhat complicated, but a reasonably useful paraphrase of it reads as follows: Le Châtelier principle: If a system at equilibrium is subjected to a change of pressure, temperature, or the number of moles of a component, there will be a tendency for a net reaction in the direction that reduces the effect of this change. To see how this works (and you must do so, as this is of such fundamental importance that you simply cannot do any meaningful chemistry without a thorough working understanding of this principle), look again at the hydrogen iodide dissociation reaction

System Dynamics Insight Maker supports System Dynamics modeling: a powerful method for exploring systems on an aggregate level. By "aggregate", it is meant that System Dynamics models look at collections of objects, not the objects themselves. For instance, if you created a model of a water leakage from a bucket, a System Dynamics model would concern itself with the quantity of water as a whole, not with individual droplets or even molecules. Similarly, if you were modeling a population of rabbits, the System Dynamics model would look at the population as a whole, not at the individual rabbits. System Dynamics models are constructed from a set basic building blocks also known as "primitives". The key primitives are Stocks, Flows, Variables and Links.

The Eerie Glow of the Antarctic Aurora Illuminates the Continent, Seen from Space The Sun may seem steady and calm to the eye, but in reality it’s anything but. Magnetic fields pierce the surface, barely constraining the dozens of millions of tons of ionized plasma that flow along them. These loops of magnetic force store vast amounts of energy, and if released, can explode with the force of millions of nuclear bombs. And when they do, that matter is hurled into space at speeds hundreds of even thousands of times faster than a rifle bullet.

SimCityEDU Games With the suite of SimCityEDU games developed by GlassLab, educators have versions of SimCity created specifically for the classroom, with all of the tools and content they need to making learning come alive for students. Designed in partnership with learning and assessment experts from ETS and Pearson, SimCityEDU Games will engage students in a personalized learning experience, and improve the process of teaching and learning by providing formative assessment information about students’ ability to problem-solve, explain the relationships in complex systems, and read informational texts and diagrams. Lesson plans and teacher and student dashboards complete the SimCityEDU experience.

Chemicals - Manual - Lesson 5 At a Glance Overview Students apply their growing understanding of the concepts of toxicology (dose, response, individual susceptibility, potency, and threshold) to their discussion of the 1950s tragedy in Minamata, Japan. They learn how to assess the risk of people to specific chemical hazards and make decisions about how to manage that risk. Major Concepts Chemistry Learn and research science, chemistry, biology, physics, math, astronomy, electronics, and much more. is your scientific resource and internet science PORTAL to more than 20,000 science sites. Get better grades, increase your knowledge, make your work easier, enjoy learning. All information on this site is FREE! This site is FREE. No sign up. Basic Oxygen Steelmaking In this simulation you will play the role of plant metallurgist in charge of the BOF operations. You will have to decide on scrap and addition materials, and the amount of hot metal to charge into the BOF to attain a target composition of the chosen steel grade and to tap within required time and temperature limits. You should also aim to minimize the cost of the whole operation. This completes the current section. If necessary, please ensure that you have achieved the learning outcomes for this section: World Steel Association, MATTER and their partners are not responsible for the content of external sites.

Chemistry of Hard and Soft Water I'm sure you've heard the terms 'hard water' and 'soft water', but do you know what they mean? Is one type of water somehow better than the other? What type of water do you have? Let's take a look at the definitions of these terms and how they relate to water in everyday life. Teachers' Online Primary Science Soap and detergents This topic explores the fascinating world of soaps and how they clean dirt from clothes and food from dishes. This topic should be read in conjunction with the topics Like dissolves like and Talking solutions. What is dirt? Most dirt and food stains are composed of oils and other biological molecules, sometimes mixed with inert materials like sand.

Teachers' Online Primary Science HAZCHEM signs Dangerous goods are divided into classes based on the hazards they pose. All packages and containers, shipping containers, trucks, trains and tankers which carry dangerous goods must carry the correct "Class Label" in the form of a diamond shaped sign. This diamond sign shows the nature of the hazard posed by the dangerous substance by color, symbol and the class of the goods by number. The classification system The Australia labelling system has nine classes of dangerous goods with subsections according to the type of hazard applicable. Multiple signs may sometimes be required with mixed loads or certain types of chemicals.