Page 47 - modular4.0
P. 47

Chapter Profile
                 Motion Blocks

                 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. You can change the

                 number  of  steps. To make the  sprite move backward, give  a minus  (–)  sign  before  the

                 number as shown below                     . This will move the sprite 30 steps back on the stage.

                 Looks Blocks

                 The blocks that are used to add speech and thought bubbles to the sprite are called Looks

                 Blocks. 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                             .

                 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                                       .



                 Events Blocks

                 This is the topmost block. It helps to run the script on the stage as it
                 controls the starting of scripts. It gives you the control of all the 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.


                        ADDING A SPRITE


                 When you open Scratch, the default Sprite1 is the cat. The location of the sprite cat is at the
                 centre of the stage. Let us add another sprite to the stage.

                 To add a sprite, follow the given steps:










                                                                              1  Click on the
                                                                             Choose  a Sprite
                                                                             tool in the Sprites
                                                                             Info Pane.








                                                                                              Introduction to Scratch  45
   42   43   44   45   46   47   48   49   50   51   52