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Population Explosion | Concord Consortium Copyright© Copyright The Concord Consortium Record Link <a href="stem-resources/population-explosion">The Concord Consortium. Population Explosion. Concord: The Concord Consortium, 2010, September 15. AIP Population Explosion (The Concord Consortium, Concord, 2010, September 15), WWW Document, ( AJP Population Explosion (The Concord Consortium, Concord, 2010, September 15), WWW Document, ( APA Population Explosion. (2010, September 15). Disclaimer: The Concord Consortium offers citation styles as a guide only. Middle School Chemistry | Download Free Science Activities, Access Chemistry Multimedia, Find Information on Workshops

African Lions: Modeling Populations Copyright© Copyright The Concord Consortium Record Link <a href="stem-resources/african-lions-modeling-populations">The Concord Consortium. African Lions: Modeling Populations. Concord: The Concord Consortium, 2013, October 24.</a> AIP African Lions: Modeling Populations (The Concord Consortium, Concord, 2013, October 24), WWW Document, ( AJP African Lions: Modeling Populations (The Concord Consortium, Concord, 2013, October 24), WWW Document, ( APA African Lions: Modeling Populations. (2013, October 24). Disclaimer: The Concord Consortium offers citation styles as a guide only.

Passive Solar Design: Zero-Energy Housing NGSS Teacher Information Passive solar design is the utilization of the sun's energy, the geographical climate, and the properties of different materials to heat and cool buildings. It includes a variety of methods that use no human-made energy to operate and can reduce the amount of energy needed for heating and cooling by considerable amounts. In years past, indigenous people who lived in harsh desert locations built partially-underground homes that kept them cool during the day and warm at night. They also built adobe homes in cliff-side caves that were chosen because the winter sun warmed them and the summer sun couldn't reach them. Passive solar should not be confused with active solar design or photovoltaic solar cells. Below are examples of how some materials you provide your students might be used: The “During the Day” test represents the presence of sunshine on a clear day, by shining the bright light on the model homes. Note on Instructional Sequence PS3.A: Definitions of Energy Part 1

Why a Hawk Is a Hummingbird’s Best Friend You know what they say about location and real estate. Hummingbird nests often appear in clusters, but for years researchers couldn’t figure out what attracted the birds to certain areas. Turned out the answer was, “good neighbors.” Biologist Harold Greeney was doing fieldwork in Arizona in 2007 when he and his team realized that breeding hummingbirds often clustered around hawk nests. By 2009, Greeney and company were able to report that the hummers nesting close to hawks were actually more successful at raising chicks. Hawks don’t prey on hummingbirds or their nests—there’s not enough meal in a hummer to be worth the effort, apparently. We know that timid species often hang out near more aggressive species for protection. When they cross-referenced the GPS coordinates of hummingbird and hawk nests with the locations where jays were foraging, they expected to see “a big circle around the hawk where the jays just never went,” said Greeney. The hummingbirds’ strategy seems to work.

Lesson Racing Molecules Loading... Racing Molecules Racing Molecules Unit 10: Thermodynamics and Heat Transfer Lesson 2 of 6 Objective: SWBAT calculate the approximate speed of molecules in warm and cold water. Deborah Gaff 83 Lessons Big Idea: Temperature is the measurement of the average energy of particles in a system. but just how fast are they moving? Print Lesson 8 teachers like this lesson Standards: Subject(s): Science, engineering 65 minutes The Need for the Lesson Students know that all matter is made up of atoms and atoms have energy. … Read more expand content Investigation Preparation & Summary 10 min Students will be able to measure the average kinetic energy of water molecules at different temperatures (MS-PS1-4 Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.) Resources (1) Resources (1) Racing Molecules Material List Resources Students in Action 45 min Developing a Conceptual Understanding: Beyond Memorization

What’s so great about the Great Lakes? - Cheri Dobbs and Jennifer Gabrys Think about your family members. You are all related, but are you all the same? While the five Great Lakes are physically connected to one another, each has a unique set of characteristics, much like children living within the same family. The five bodies of water that make up the Great Lakes are truly unique in their geology, history, biology, hydrology, impact, and issues. The Great Lakes basin supports upwards of 30 million people, including 10% of the population of the United States and 30% of the population of Canada. The lakes have value for recreation, shipping, transportation, drinking water, agriculture, and industry, to name a few, and have an effect on the local weather and climate. The Great Lakes also have much to offer visitors to the region. While the Great Lakes are a critical natural resource, the system is not without its share of problems.

Chapter 2: Changes of State | Middle School Chemistry Unit Skip Navigation Middle School Chemistry big ideas about the very small Lessons Materials Vist the materials page to see exactly which materials you'll need to complete the lessons in Chapter 2. Teaching Resources Student Reading Student Reading for chapter 2 Teacher Background Test Bank Questions Chapter 2 Sample Multimedia Evaporation and Condensationfrom Chapter 2, Lesson 3 Ice at Different Anglesfrom Chapter 2, Lesson 4 Dry Icefrom Chapter 2, Lesson 5 Conducting Energyfrom Chapter 2, Lesson 1 About ACS The American Chemical Society is dedicated to improving lives through Chemistry. Learn More Help Copyright © 2015 American Chemical Society.

Ecology Disrupted Using real scientific data to link daily life to environmental issues and ecological functions in secondary school science classrooms. These case study units engage students in real scientific research that has been published in peer-reviewed scientific journals. The research is introduced through the use of videos produced by the Museum's Science Bulletins program. The overarching goals of these units are to: Connect regular daily life activities to disruption of ecological function Analyze authentic scientific data Learn about real scientists and their stories Before you begin... Read Why Use Ecology Disrupted? Review How to Use the Ecology Disrupted Materials to learn how to navigate the Ecology Disrupted web site, and how to locate and use specific materials for creating your own lesson plans. As you use Ecology Disrupted... Each unit has an index that lists unit contents by topic and by type of material.

Molecules Matter | Chapter 1: Matter—Solids, Liquids, and Gases Note: Some solids, liquids, and gases are made of atoms, and some are made of molecules. Since the concepts covered in Chapter 1 apply to both atoms and molecules, the term “particle” is used as a generic term to include both. At this point, it is enough to give students simple working definitions of “atom” and “molecule.” Have a discussion about chemistry and matter. Water Drops Unite Teacher Preparation Print two “Water Drops Unite” sheets for each group.Procedure Tape a piece of wax paper over the “Water Drops Unite!” Life Under a Rock: Bacteria in Extreme Environments The world’s deserts are harsh environments. Some are extremely hot like the Sahara in Africa, while others are frozen deserts, like those in the polar regions. What unites them is that they are all very dry, receiving little annual precipitation. It might seem like nothing could grow in these environments. But if you turn over a white rock like quartz or marble in practically any desert on earth, you’ll see something that looks like this: This is a colony of cyanobacteria, with plenty of dirt sticking to it. Cyanobacteria are bacteria that are able to conduct photosynthesis, meaning that they can make the sugars and starches they need to survive from sunlight, water, and carbon dioxide. Cyanobacteria can survive in a variety of conditions in nearly every ecosystem on Earth, but they have their limits. Quartz and marble rocks create great environments for cyanobacteria. Cyanobacteria are single-celled microorganisms, and they’re too small to see individually.