Saturday, August 15, 2009

Instructions for Final RBO 880 Examination (Part 3)

Click here to see the artical about (A critical review of the use of web based tools and mobile devices as cognitive tools in Ohm's law)


http://docs.google.com/View?docID=0AVdQrR0UV1PAZGhjcXFzOHNfN2hyOWN4d2ho&revision=_latest

RBO examination (Part 2)







Wednesday, August 12, 2009

Thursday, July 16, 2009

I have learned about pi:

1. What is Pi?

I knew that, pi is the ratio of the circumference of a circle to its diameter. Pi is always the same number, no matter which circle you use to compute it.

2. How do we calculate the value of pi?

I knew that, how to calculate the value of Pi: Pi is the ratio of a circle's circumference to its diameter, such that Pi = c/d, where c is the circumference and d is the diameter. There are many methods for calculating Pi; some of them have been known since antiquity, while others have been discovered relatively recently.

Calculate Pi with the method used by Archimedes.

Use the method discovered by Madhava of Sangamagrama in the 15th century.

Examine the solution for Pi found by Leonhard Euler in 1735.

The formula Pi = 176 tan^--1(1/57) + 28 tan^--1(239) - 48tan^--1(682) + 96 tan^--1(12943) ... was used in 2002 to calculate Pi to 1,241,100,000,000 digits.
Pi = 22/7 or Pi=3.14


3. What is the history behind Pi?

I knew that, the history of Pi : Pi has been known for almost 4000 years, The ancient Babylonians calculated the area of a circle by taking 3 times the square of its radius, which gave a value of pi = 3. One Babylonian tablet (ca. 1900–1680 BC) indicates a value of 3.125 for pi, which is a closer approximation.
In the Egyptian Rhind Papyrus (ca.1650 BC), there is evidence that the Egyptians calculated the area of a circle by a formula that gave the approximate value of 3.1605 for pi.

4. Why is Pi an important value in every day life?

I knew that, why is Pi an important value in our life: Pi is important especially in anything such as graphing or construction because it is needed to make a circle every day. Pi is perhaps the most important mathematical constant. It appears in various formulas throughout math and science in fields as diverse as physics, statistics, and sociology.

Wednesday, July 15, 2009

Day 1

Task 1


1.1 What are your expectations of RBO?

May be to learn about web based learning and mobile learning and to learn how to create blog.

1.2 What is Web based and Mobile Learning?
Web-Based: a web application is an application that is accessed via web browser over a network such as the Internet or an intranet.

http://en.wikipedia.org/wiki/Web_based

I think that web based is information made available via the World Wide Web.


Mobile learning (m-learning): refers to the use of mobile and handheld IT devices, such as Personal Digital Assistants (PDAs), mobile telephones, laptops and tablet PC technologies, in teaching and learning


http://www.excellencegateway.org.uk/page.aspx?o=ferl.aclearn.page.id958


I think that mobile learning: using mobile in learning and teaching. It enhances learning by communication, information sharing, interoperability, and collaboration via mobile.


1.3 How are you going to give the information to me?
May be by sending it to your email or via blog.