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In Scratch, extensions add extra blocks and features that can be used in projects. In Scratch 2.0, the extensions were all hardware-based and Pen was a normal category. Software-based extensions were added in Scratch 3.0, such as text-to-speech voices, along with some new hardware-based extensions like the micro:bit. The extensions are listed ...
A simple custom block in the Snap! visual programming language, which is based on Scratch, calculating the sum of all numbers with values between a and b. In computing, a visual programming language (visual programming system, VPL, or, VPS), also known as diagrammatic programming, [1] [2] graphical programming or block coding, is a programming language that lets users create programs by ...
The definition describes the block's appearance (user interface) and the generator describes the block's translation to executable code. Definitions and generators can be written in JavaScript, or using a visual set of blocks, the Block Factory , which allows new blocks to be described using extant visual blocks; the intent is to make creating ...
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ScratchJr is a derivative of the Scratch language, which has been used by over 10 million people worldwide. Programming in Scratch requires basic reading skills, however, so the creators saw a need for another language which would provide a simplified way to learn programming at a younger age and without any reading or mathematics required.
Extended sets of blocks can be found in Snap! libraries, such as the 'streams' library that enables one to make the complete, infinite Fibonacci sequence, for example, using the special blocks ('stream', 'show stream', 'tail of stream', and 'map ( ) over stream' block) from the library.
The two largest similar projects are Scratch and Alice. There are two major differences: Both of these projects use a graphical programming language based on the concept of "blocks," but Hackety Hack teaches Ruby. Both Scratch and Alice are university projects out of MIT and CMU, respectively, and Hackety Hack has no university affiliation.
Some people are blessed with the gift of gift-giving, and others need a little help. If you fall into the latter, there is good news. Sites like Mark and Graham will make you look like an expert ...