Page 90 - TP_Prime_v2.2_Class_3
P. 90

Tabs: Scratch has mainly three tabs which are described below:
                       Code Tab:  It contains block categories and the list of blocks in a category.
                       The categories are—Motion, Looks, Sound, Pen, Events, Control, Sensing,
                       Operators, Variables, and My Blocks. All block categories are of different

                       colours. The blocks connect to each other like a jigsaw puzzle and create scripts.
                       Costumes Tab: In this tab, you can add and make changes in the appearance of
           Prime (Ver. 2.2)-III    Blocks
                       the sprites and backdrops.
                       Sounds Tab: In this tab, you can add and make changes in the sounds of the
                       sprite and backdrop.






                  Blocks are the codes or commands used to create a program in Scratch. It looks like
                  a puzzle piece and each block connects with the other block to perform a task.

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                   Motion Block

                  The blocks that are used to control the movement of a sprite are known as Motion
                  blocks. They are blue in colour. For example, the motion block is used to move a
                  sprite.


                  Here, 10 is the number of steps that the sprite will move forward  move 10            steps . You can
                  change the number of steps. To make the sprite move backward, give a minus (–) sign
                  before the number as shown          move -30  steps  . This will move the sprite 30 steps back on
                  the stage.


                   Looks Block

                  The blocks that are used to add speech and thought bubbles to the sprite are called
                  Looks Block. They are purple in colour.

                  For example, you want to add a speech bubble to the sprite for 2 seconds with a

                  message ‘Hello!’ as shown  say Hello!  for 2  seconds .
                  You can change the message by clicking on the message text box and typing your own
                  message.  You  can  also  change  the  time  by  clicking  on  the  time  text  box.

                   think Hmm...  for 2  seconds


                   Events Block

                  This is the topmost block. It helps run the script on the stage as it
                  controls the starting of scripts. It gives you the control of all the               when     clicked
                  blocks as without an event block no program will run.

                  To run the script, you have to click on the Go button before the other blocks.
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