Visual Programming Languages in the Browser: Scratch and Snap

May 18, 2012 at 6:59 am 3 comments

The all-browser-based Scratch 2.0 prototype was just released for testing (see below).  I’ve been playing with the “Snap!” prototype (successor to BYOB Scratch), which is also all-browser-based.  This is a great trend for high school CS teachers, who often can’t install software on their computers.

Welcome to the Scratch 2.0 prototype! We hope you’ll explore and experiment. Check out the Featured Projects and Featured Galleries. Click Help to learn more.

We’re still in the process of adding and revising features. Unfortunately, you can’t login yet, so you won’t be able to save or remix projects or write comments. These features and more will be available when we officially release Scratch 2.0 later this year.

via Scratch – Imagine, Program, Share.

Entry filed under: Uncategorized. Tags: , , , , .

Dismal results for US science education « Gas station without pumps We need to produce far more software developers than programmers: How do we change?

3 Comments Add your own

  • 1. Tony  |  May 18, 2012 at 3:35 pm

    Nice! It looks like Snap 4 may mostly/entirely pure HTML5; it “sorta” works on my iPad and Kindle Fire, and the same would likely be true on my iPhone if the UI weren’t so small. If they get that working they’ll really have something (unfortunately MIT’s new Scratch requires Flash, which doesn’t run on iOS and isn’t going to be supported on the next-gen Android devices, either).

    The problems I noted in a short test were: 1) pinch-zoom doesn’t work (hence the problems on the iPhone — parts of the UI could benefit from zooming on full tablets, too) 2) clicking on a text-entry field doesn’t bring up the on-screen keyboard. Both of these should be pretty easy to add. The text zoom just requires a setting in the head metadata. I’m not sure why the on-screen keyboard isn’t coming up, since that normally happens by default. Probably they’re intercepting keystrokes for their own purposes.

    Reply
    • 2. Jens Mönig  |  May 23, 2012 at 9:49 am

      Thanks for the quick test and the overall favorable review of our Snap alpha version!

      You’re right in noting that Snap 4 is entirely made in HTML5/JavaScript, and therefore ultimately should work in any modern web browser. At the moment we’re only targetting desktop browsers, but personally I’d love Snap to be usable on tablets such the iPad right from the beginning. The technical side, though, isn’t quite as simple as “HTML5” might suggest, because Snap is a “lively”, multi-threaded, interactive programming environment, which actually runs inside a single Canvas element (including all text rendering).

      Over the past days I’ve tried to address the two issues you found (missing pinch-zoom and virtual keyboard) when trying Snap on your iPad. I’m curious if these developments now make Snap better usable on your iOS devices.

      Reply
  • 3. chaikens  |  May 19, 2012 at 7:47 pm

    Really cool! Can’t wait to finish trying to implement binary search on it! Good to see array/lists are in it.
    Seth

    Reply

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Trackback this post  |  Subscribe to the comments via RSS Feed


Enter your email address to follow this blog and receive notifications of new posts by email.

Join 9,004 other followers

Feeds

Recent Posts

Blog Stats

  • 1,876,343 hits
May 2012
M T W T F S S
 123456
78910111213
14151617181920
21222324252627
28293031  

CS Teaching Tips


%d bloggers like this: