A web page and interactive applet show how to compute the perimeter of a square. A square is shown that can be resized by dragging its vertices. As you drag, the perimeter is continuously recalculated. Text on the page explains that the perimeter is the sum of the sides. For those who prefer it, in a formula that is given. 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 reference book project at http://www.mathopenref.com.

A web page and interactive applet show how to compute the perimeter of a trapezoid. A trapezoid is shown that can be resized by dragging its vertices. As you drag, the perimeter is continuously recalculated. Text on the page explains that the perimeter is the sum of the sides. For those who prefer it, in a formula that is given. 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 reference book project at http://www.mathopenref.com.

A web page and interactive applet show how to compute the perimeter of a triangle. A triangle is shown that can be resized by dragging its vertices. As you drag, the perimeter is continuously recalculated. Text on the page explains that the perimeter is the sum of the sides. For those who prefer it, in a formula that is given. 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 reference book project at http://www.mathopenref.com.

An interactive applet and associated web page that demonstrate the concept of 'perpendicular'. The applet presents two intersecting line segments, one initially at right angles to the other. As you drag the end points of the line segments a message and the right-angle mark at the intersection tell if it is currently perpendicular. The goal is to show what a right angle 'looks like'. 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.

An interactive applet and associated web page that demonstrate the perpendicular bisector of a line segment. The applet shows a fixed line and another moveable one that bisects it. As you drag either end of it, it is seen that only when they are perpendicular to each other is the definition valid. 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.

An interactive applet and associated web page that show how to determine of one line is perpendicular to another in coordinate geometry. The principle used is that if two lines a re perpendicular to each other the slope of one is the negative reciprocal of the other. The applet shows to lines that the user can move. The slopes are continuously calculated as you drag them, and if the they are parallel they change color. The calculation is shown on screen updated continuously as you drag. The grid, axis pointers and coordinates can be turned on and off. The calculation display can be turned off to permit class exercises and then turned back on the verify the answers. The applet can be printed as it appears on the screen to make handouts. The web page has a full description of the concept of perpendicularity, a worked example and has links to other pages relating to coordinate geometry. 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 user guide is a personal safety resource for anyone who is concerned about or experiencing technology-enabled abuse, stalking, or harassment. It can help you sever digital ties with those you no longer want to be connected to and outlines the personal safety features that are built into Apple devices.
Use the guide to learn about ways to review and change what you’re sharing and secure your device when someone else may have had physical access.
Also learn about the features built into Apple devices to support your personal safety and privacy.
Included are checklists that will help you quickly learn how to control who you want to have access.
The guide is both web-based or available as a downloadable PDF.

Written by Lansing Community College Psychology professor Dr. Mark Kelland, this book covers general personality theory, with an emphasis on cultural aspects affecting personality development. There is also a section focusing on making positive choices in the development of one's personality from a number of different cultural/philosophical perspectives.

Answers to frequently asked questions such as: "How will a teacher personalize learning for every single student?"

There is also a link to download "Dispelling the Myths: Frequently Asked Questions About Competency-Based Education."

TED Studies, created in collaboration with Wiley, are curated video collections 逖 supplemented by rich educational materials 逖 for students, educators and self-guided learners. The Edge of Knowledge explores the fascinating implications of some of science's most perplexing theories: quantum mechanics, general relativity and attempts to unify them. Learn how scientists combine sophisticated mathematics and ambitious experimentation like CERN逭s Large Hadron Collider to advance our understanding of the universe.

The following is a list of picture books that teachers can reference when looking for books to use in the classroom that will infuse agriculture into lessons they're already teaching. These books would be very useful to teach a variety of reading strategies and comprehension tools with such as making connections, predicting, and determining author's purpose.

This mini unit plan is taken right from Ag in the classroom. Lesson plans and handouts are included. Topics discussed include, food waste, soil science, plant biology, and climate change.

• Learn about different poetic terms
• Learn about a variety of different poem types
• Analyze a poem of your choosing using the TP-CASTT handout
• Learn how to write a variety of different types of poetry
• Write your own poem

This free, online article, developed for elementary teachers, describes a Kindergarten polar science, standards aligned, unit centered on The Polar Express developing literacy, math, and science skills.

Much of the focus on modern Japan in U.S. curriculum is on Japan's role in World War II and/or on its status as an economic superpower by the 1980s. The steps along Japan's path from a defeated aggressor nation to a peace-oriented, prosperous power are less-noted, but essential for explaining Japan's transformation and the U.S.'s role in that process. One primary source activity in this cluster focuses on Japan's postwar identity as a "peace state," and how that identity was a product of Article 9 of the new Constitution created by Americans under General MacArthur. Japan's pacifism was undergirded by a strong U.S. military presence in Okinawa, a presence now increasingly challenged by Okinawans and other Japanese. The second activity uses photographs to explore the April 2010 Okinawan protests against the U.S. base at Futenma. A final source, the animated cartoon Sazae-san, looks at an aspect of Japanese cultural identity influenced by the U.S., specifically the Japanese celebration of Christmas in the postwar years. How the Japanese have thought about these changes Đ embracing certain roles and practices while questioning or rejecting others Đ is a main theme of this group of documents.

An interactive applet and associated web page that demonstrate polygons. The applet shows a polygon which is initially an irregular convex pentagon. The user can drag any vertex and a message shows if it becomes concave. The user can also alter the number of sides from 3 to 99, the title changing to reflect it's name up to 12 sides. You can also make it regular, dragging a vertex then changes all vertices to maintain it as regular. The web page has many definitions and links to the various forms and orders of polygon. 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.

An interactive applet and associated web page that demonstrate that the exterior angles of a polygon always add to a constant (360 or 720 depending on your point of view). The applet shows a polygon where the user can drag the vertices to reshape it, alter the number of sides, make it convex or concave, regular or irregular. The applet shows the angle summation in real time, demonstrating that it is always constant. It also demonstrates how exterior angles are accounted for in concave polygons, where the exterior angle seems to be inside the figure. These are taken as negative angles and the sum demonstrably remains the same. 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.

An interactive applet and associated web page that demonstrate that the interior angles of a polygon always add to a number related only to the number of sides. The applet shows a polygon where the user can drag the vertices to reshape it, alter the number of sides, make it convex or concave, regular or irregular. The applet shows the angle summation in real time, demonstrating that only the number of sides affects the total. The text on the web page gives the formula for the total of the interior angles. 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.