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    Block  Function                                     This  block  changes  the  sprite’s  position  vertically,
                                      change y by  10   moving  it  up  (positive number) or down (negative
     These blocks have a notch at the top and flat bottom. They
     end a script. Nothing can go under them. For example: the   number).
     Cap Block  stop all block.                         This block makes the sprite bounce back when it hits
                                      if on edge, bounce
                                                        the edge of the screen.

     EVENTS BLOCKS        point towards  mouse-pointer  This block makes the sprite point towards a specified
                                                        direction (e.g., North) or another sprite.

     Events blocks  start  scripts  when something
     happens.  They make  the  project  interactive  by

     reacting to actions. Some of the commonly used   There are 7 Hat and 2 Stack blocks   LOOKS BLOCKS
     event blocks with their descriptions are as follows:   in the Events Block category.
                     Looks blocks let you change how your sprite appears. You can use them to make

     This block starts  the script  when  the green flag  is   your sprite talk, switch costumes, adjust its size or add special effects. Some of the
     when  clicked   commonly used Looks blocks and their descriptions are as follows:
     clicked. It is often used to begin a project.
                                                         This block makes the sprite show a thought bubble
     This block  starts  the  script  when the  backdrop   think  Hmm...
     when backdrop switches to  backdrop1               with the given text.
     changes to a specified one.
                                                        This block changes the sprite’s look by switching it to
                          switch costume to  costume2
                                                        the selected costume.
     MOTION BLOCKS
                                                        This block changes the sprite to its next costume in
                                          next costume
     Motion blocks let you control your sprite’s movement. You can use them to make   order.

     your sprite move, rotate or glide in any direction you choose. Some Motion blocks   This block changes the stage background to the one
     need values for coordinates and directions. Some of the commonly used Motion   switch backdrop to  backdrop1  you choose.
     blocks and their descriptions are as follows:

                                                        This block changes the stage to the next backdrop in
     This block instantly moves the sprite to a specified   next backdrop
     go to  random position  location,  which can be  that  of another  sprite,  the   order.
     mouse pointer or a random location.                This block makes the sprite appear on the stage if it
                                               show     was previously hidden.
     This block  instantly  moves  the  sprite  to  a  specific
     go to x:  0  y:  0
     location (x, y) on the screen.
                                               hide     This block makes the sprite disappear from the stage.
     This block  makes  the  sprite  move  smoothly  to  a
     glide  1  secs to x:  0  y:  0
     specified location (x, y) over a set number of seconds.  Let’s create a project using Events, Motion and Looks blocks.

     This block changes the sprite’s position horizontally,   To create a project, follow the given steps:
     change x by  10  moving  it  to  the right (positive  number) or left   Step  1    Add Batter sprite.

     (negative number).

                                                                                            Scratch Coding Adventures  93

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