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The National Council of Teachers of Mathematics is a public voice of mathematics education, providing vision, leadership, and professional development to support teachers in ensuring mathematics learning of the highest quality for all students. With 100,000 members and 250 affiliates, NCTM is the world's largest organization dedicated to improving math education in preK‑12. The Greek mathematician Archimedes approximated pi by inscribing and circumscribing polygons about a circle and calculating their perimeters. Similarly, the value of pi can be approximated by calculating the areas of inscribed and circumscribed polygons. This activity allows for the investigation and comparison of both methods. Instructions:   In this applet, polygons are inscribed and circumscribed around circles. The area of the polygons around a circle of radius 1 are calculated on the left, and the perimeter of the polygons around a circle of diameter 1 are calculated on the right. Change the value of n to increase or decrease the number of sides in the polygons, and notice how the calculations of the areas and perimeters begin to approximate pi.

Blog post about how to use movies to review with Go Fish! game

Sometimes it's hard to explain exactly how you feel. This handy vocabulary wheel helps you narrow down exactly what word best expresses your current emotional state.

Sometimes it's difficult to articulate how you feel.We may find ourselves at a loss for words especially during intense situations. People sometimes use more than one language to express their feelings or describe something.

Is your podcast not gaining enough traffic and high ranking on Google? Getting your podcast transcribed can boost its ranking immensely.

Thousands of doctoral students are finding research transcription extremely useful to increase their skill sets and earning potential. Learn more!

Improve your typing speed to sparkle in the transcription industry, one of the booming sectors to get better opportunities for job seekers. Here's your complete guide!

The purpose of the survey was to ascertain the level of awareness and openness to mobile learning among English language teachers. I also wanted to find out to what degree and how teachers were already using mobile learning both in their teaching and and professional development and to establish whether they would be willing to pay for and use mobile content. The survey also collected information about the teachers' existing access to mobile services and the kinds of device they are using to get access to mobile Internet.

Impressed by the "tour" of Twine and how nuanced it seems to be, I registered for the beta.

Eventually useful in upper-level language courses? A Quintura for foreign languages on a social-networking scale?

Read more about how to get complete, quick and reliable computer repair in orange county, california. Sacatech will solve your all computer related problems within a hour or a day. Your computer/laptop will repaired on the spot.

This slideshow illustrates how Professor Caulkins uses Skype to bring authentic voices into the classroom, provide students with opportunities to apply their skills, and bring course content to life with compelling and challenging cross-cultural experiences.

* An example sentence-even if we've only found one sentence for a word, we'll show it to you. (And we'll show you where the sentence came from, too! * Related words: not just synonyms and antonyms, but words that are used in the same contexts. (For instance, cheeseburger, milkshake, and doughnut are not synonyms, but they show up in the same kinds of sentences.) * Images tagged by our friends at Flickr: want to know what a "pout" looks like? We'll show you. * Statistics: how rare is "tintinnabulation"? Well, we think you'll see it only about once a year. "Smile"? You might see that word Our goal is to show you as much information as possible many times, every day. * An audio pronunciation-and you can record your own! * Something YOU tell us! Use the "Contribute" links to tell us something-anything-about a word.

Students often expect their teacher to correct their written errors, but students can also learn a lot from looking for and correcting errors in written work. This activity gives you the chance to test your correction skills and find errors in short texts using a site called BookOven and a tool called SpellChecker