When students plot irrational numbers on the number line, it helps reinforce the idea that they fit into a number system that includes the more familiar integer and rational numbers.
An interactive applet and associated web page that show the behavior of irregular polygons. The applet shows initially an irregular convex polygon. All vertices are draggable and when dragged show that this has no effect on any other vertex. The polygon can be made regular, and the number of sides changed between 3 and 99. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.
This site offers instructional activities for irregular and high frequency words. Not all words use the most common phoneme-grapheme correspondences, but most words are at least partially decodable. Many words appear so frequently in text that children need to learn them before they have been taught the necessary phoneme-grapheme correspondences. The resources on this site provide a range of options for you to teach such words.
This is lesson 4 of 4. Students will be presenting and evaluating their apps for cell phones that will provide farmers with the opportunity to learn how different irrigation methods work depending on soil type.
This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.
This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.
In this activity, students conduct an investigation to purify water. They engineer a method for cleaning water, discover the most effective way to filter water, and practice conducting a scientific experiment. Through this activity and its associated lesson, student teams follow the steps of the engineering design process related to water treatment, as done by practicing engineers, including constructing and testing their designs.
To better understand electricity, students investigate the properties of materials based on their ability to dispel static electricity. They complete a lab worksheet, collect experimental data, and draw conclusions based on their observations and understanding of electricity. The activity provides hands-on learning experience to safely explore the concept of static electricity, learning what static electricity is and which materials best hold static charge. Students learn to identify materials that hold static charge as insulators and materials that dispel charge as conductors. The class applies the results from their material tests to real-world engineering by identifying the best of the given materials for moving current in a solar panel.
This lesson is part 2 of 4. After learning about the food safety continuum students will learn protocols that assist the farmer/rancher to do their part to ensure a safe and healthy food supply. This lesson covers what farm biosecurity is and the practices that make a farm safe from biological hazards.
When we hear the word radiation, it壽猻 tempting to picture huge explosions and frightening mutations. But that壽猻 not the full story 壽� radiation also applies to rainbows and a doctor examining an X-ray. So what is it, really, and how much should we worry about its effects? Matt Anticole describes the different types of radiation.Lect
What makes a superhero super? By comparing popular culture superheroes with heroic characters in childrenŐs literature, students learn to think critically about character traits, and consider how cultural perspectives influence the kinds of heroes we choose.
The goal of this activity is to understand how techniques of persuasion (including background, supporting evidence, storytelling and the call to action) are used to develop an argument for or against a topic. Students develop an environmental case study for presentation and understand how a case study is used as an analysis tool.
Students will brainstorm ways that they use and waste natural resources. Also, they will respond to some facts about population growth and how people use petroleum. Lastly, students will consider the different ways that engineers interact with and use our natural resources.
In this activity, students survey other people to find out their thoughts about life beyond Earth and compare their ideas with visitors to the Cosmic Questions exhibit. Students can also analyze their survey data to see whether there is any variation or patterns in answers from men and women or people of different ages. To do this, students will need to design their own method for tracking demographic data. This activity is part of the "Cosmic Questions Educator's Guide" that was developed to support the Cosmic Questions exhibit. Activities in the guide can be used in conjunction with or independently of the exhibit.
This activity uses Dr. Drake's framework to have students consider the implications of each term and make their own estimates of life in the Milky Way galaxy.åÊThis activity is part of a guide that was developed in conjunction with the Cosmic Questions exhibit and complements a museum visit. However, the activities can also be used independently. The format is flexible, and educators can pick and choose the materials that are most appropriate for their students.
This art history video discussion looks at the reconstruction of the "Ishtar Gate and Processional Way", Babylon, c. 575 B.C.E., glazed mud brick (Pergamon Museum, Berlin).
In which John Green teaches you the history of Islam, including the revelation of the Qu'ran to Muhammad, the five pillars of Islam, how the Islamic empire got its start, the Rightly Guided Caliphs, and more. Learn about hadiths, Abu Bakr, and whether the Umma has anything to do with Uma Thurman (spoiler alert: it doesn't). Also, learn a little about the split between Sunni and Shia Muslims, and how to tell if this year's Ramadan is going to be difficult for your Muslim friends. Let's try to keep the flame wars out of this reasoned discussion.
In the wake of a hurricane and beset by an economic recession, the University of Texas Medical Branch on Galveston Island rebuilt for future resilience.
Sal checks whether the commutative property applies for matrix multiplication. In other words, he checks whether for any two matrices A and B, A*B=B*A (the answer is NO, by the way). Created by Sal Khan.
This article is about the isoperimetric theorem. It states the theorem, explains its history and uses examples and exercises to demonstrate it. The resource is from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications.