If you haven’t heard of Scratch, then you’ve been missing out and so have your students. Scratch is an open source programming environment, with an integrated programming language also called Scratch, created by MIT with the goal of introducing users, especially young people, to computer programming. Users can create interactive stories, games and graphics. Furthermore, these creations can be shared with others via Scratch’s Web site. This is an excellent way to introduce your students to STEM.
What makes Scratch so special? To begin with, the interface is unlike that of any application of this type that I have seen. A menu bar/toolbar is provided for frequently used tasks, such as opening saved projects and sharing completed projects. From there, the interface goes in its own unique
direction, but still remains very user-friendly. In lieu of the traditional text editor/display pane layout, Scratch utilizes four panes, each with a specific purpose and interface. Operation and manipulation of objects is almost entirely point-and-click. This is arguably from where much of its ease-of-use comes.
One of the biggest differences between Scratch and other applications of this type is how the programs are written. Rather than typing code into a text editor, users are provided with a switchboard at the top of the leftmost pane. The buttons on the switchboard represent eight categories of commands that can be employed. The commands appear below the switchboard and can be added simply by clicking on them and dragging them to the pane on the right. Here the commands can be connected in a fashion that combines a flowchart with puzzle pieces. Programs, called scripts, can be created for any object (sprite) that the user creates. These scripts integrate variables as well, such as waiting times for events or results of interaction with other objects.
Finally, one of the really cool things about Scratch is the integrated graphics system. This includes a versatile drawing tool as well as graphical images included with Scratch. The drawing tool runs in its own window and provides users with everything they need to create colorful, detailed sprites. These sprites can in turn be modified under the Costumes tab in the same pane into which programming commands are placed. Using this feature, animations can be easily created using two or more costumes for a sprite. Users can also create backgrounds or select backgrounds from Scratch’s media library. The author used just such a background for his outer space scene shown in the screenshot above.
I cannot even begin to do this application justice here. Check out the Scratch creations submitted to the Scratch Web site. Try it for yourself. Then introduce your students to Scratch and watch worlds unfold.
Scratch Web site: http://scratch.mit.edu/
I’m currently working on an article about a brilliant piece of open source software called Scratch. It’s created and maintained by MIT and designed to teach beginning computer programming to young people, but gives them the opportnity to create interactive stories and games. These can then be shared with others online. I’m really excited about this fun and versatile application. The screenshot below provides a preview of Scratch.
Today I want to focus on the KDE Education Project or KDE-Edu. As you may know, KDE (K Desktop Environment) is an open source graphical interface for UNIX-based operating systems like Linux. KDE-Edu is a project started by the people at KDE with the intention of developing educational open source software for all ages, both learners and teachers.
The software that they produce addresses language arts, mathematics, science and social studies as well as other areas of learning, such as computer programming and occupational therapy. Language arts appplications range from KHangman, a variation of the popular word game to KWordQuiz, a vovabulary builder, to Parley, a powerful vocabulary assessment tool. Mathematics applications range from KBruch, a tool for quizzing users about fractions and facotrizations to applications addressing more advanced topics, such as KAlgebra for graphing algebraic expressions and Kig, an interactive geometry tool.
In terms of science software, KDE Edu has some interesting offerings. These include, but are not limited to, an interactive periodic table of the elements, Kalzium, a virtual planetarium for your computer desktop, KStars and Step, an application that allows users to create virtual two-dinmensional physical science experiments. If you’re looking for social studies applications, check out Marble, a virtual globe that allows users to view Earth from various perspectives including geographical, historical and climate or KGeography, an application that quizzes users on their geographical knowledge including locations, capitol cities and flags.
Other applications include KTurtle, a program teaching beginning computer programming, KTouch, a typing/keyboarding tutor and KLettres, a tool for teaching younger students how to write their letters.
I cannot do KDE-Edu justice in this short space. There are more applications available than I have discuessed here. I urge you to check them out. They’re open source, free and will soon (as of this writing) be available for Microsoft Windows.