This is a QR code. A QR Code is a 2-dimensional barcode, which has encoded in it a URL (web address), text, or other information. It can be read by a QR code scanner, including QR scanner smartphone apps. Once you have an app installed on your smartphone, open the app and hold your phones camera over a QR code to read it. Most QR codes youll come across have a URL encoded, so chances are when you read the QR code it will take you to a web page.
Reviewed by members of Editorial board for inclusion in MERLOT.
Useful material in MERLOT
Click to get more information on the MERLOT Editors' Choice Award in a new window.
Click to get more information on the MERLOT Classics Award in a new window.
Click to get more information on the MERLOT JOLT Award in a new window.
Search all MERLOT
Click here to go to your profile
Click to expand login or register menu
Select to go to your workspace
Click here to go to your Dashboard Report
Click here to go to your Content Builder
Click here to log out
Please give at least one keyword of at least three characters for the search to work with. The more keywords you give, the better the search will work for you.
select OK to launch help window
You are now going to MERLOT Help. It will open in a new window
For optimal performance of MERLOT functionality, use IE 9 or higher, or Safari on mobile devices
Complete sim of an abacus, and it even translates the bead positions into a numerical representation. Includes tutorials on adding and subtracting with an abacus, as well as info on the history and cultural background of the tool. Source code freely available.
Intersting site and getting more fluid in browsing sites. I was mainly interested in the history of the abacus and this site directed me in just what I wanted to find out.
Very easy to navigate to, and very simple to understand the history of the ancient mathmatical tool. This site shows how far in a very short ammount of time, as wellas, the appreciation of my calculator.
Time spent reviewing site:
6 years ago
Demasiado simple, existen dos entradas para el mismo Objeto de Aprendizaje, el segundo Objeto de Aprendizaje no responde al link que tiene
el abaco no muestra el número ingresado completamente (solo las dos primeras cifras)