Compass and Straightedge Construction with Robocompass App

After introducing Primo, a new math game, I would also like to introduce Robocompass app, one of the latest online apps for compass and straightedge construction. It was only released three weeks ago.

Robocompass is an application that allows users to type commands and then turn those commands into an animated compass and straightedge construction. What is good about this application is that it has a 3d environment which allows the user to view the construction in any perspective. Constructions in Robocompass can be saved in Google drive and can be embedded in websites. Watch the introduction video and see the embedded file below.  Continue reading

Socrative: A Student Response System

One of the new entries in Jane Hart’s Top 100 Tools for Learning for 2013 is Socrative, a free and online student response system.

In Socrative, a teacher may create a free account where he can create different types of questions – multiple choice, short answer, and trueーfalse. The teacher can then invite students to the virtual room where student can send their answers via computer, tablet or smart phone. The answers can be viewed by the teacher on a computer and can be projected to an electronic whiteboard. Student answers on multiple choice questions can be auto-graded.

Socrative has pre-designed “exit tickets” where teachers can use to collect student thoughts . In addition, it also generates reports that can viewed using Microsoft Excel or Google Spreadsheets.

The video below is a short introduction about Socrative.

Create Latex Documents with Lyx

If you are creating a lot of scientific documents or numerous documents that contains math equations, then you might want to check out Lyx. I have been using Lyx for a week and I really like it.

Lyx is a free and open-source document processor built on top of the Latex typesetting system. It has the power of Latex, so it can be used to create books, notes, theses, and academic papers. It is free and is available for Windows, Mac OS X, Linux, UNIX and OS/2.


Lyx has a lot of great features, some of which are listed below.

  • Graphical user interface with menus
  • Automatically numbered headings, titles, and paragraphs, with table of contents
  • Copy paste to and from Latex source code
  • Bibtex support
  • WYSIWYG for cropping, rotation, and scaling of images
  • WYSIWYG table and math editors
  • Export to Docbook, SGML, XHTML, and plain text
  • more

Top 100 Tools for Learning 2013

For teachers who are looking for tools to use in teaching, as well as for students who are looking for great  tools for learning, check out the slide below. Jane Hart has once again compiled the 100 Tools for Learning for 2013. This year, Twitter still tops the list, while Google Drive/Docs is number 2. It is followed by Youtube, Google Search and Powerpoint.

There are also some new interesting entries this year, like Feedly and RSS aggregator which I had been using for quite a while. See more of the list in the slide below.

How to Trim Youtube Videos Online

For teachers who are blogging, it is sometimes needed to just show a portion of a video or sometimes it is necessary to hide certain portions of a video. There are two ways to do this. First, you can permanently trim the video, and second, you can just hide show a certain portion without literally trimming.

In this tutorial, I am going to teach you how to literally trim. The word ‘trim’ in this tutorial, literally means to cut the unneeded portion of the video. Note that you can only do this if you are the one who uploaded the video. Once you do this, you cannot undo the process. Below are the steps in trimming a Youtube video.

How to Trim Youtube Videos

1.) Login to your Youtube account.

2.) After logging in, click your name (or the name of your channel) on the upper right part of page and click Video ManagerContinue reading

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