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    LOOKS BLOCK

                     Looks blocks are purple in colour and let you modify the sprite’s costumes and colours.
                     The Looks block display text within pop-up bubbles.

                                   Blocks                                         Functions

                       say Hello!  for 2   seconds        This block displays a speech bubble of the sprite for a
                                                          specified amount of time.

                       say Hello!                         This block displays a speech bubble of the sprite.

                                                          This block gives the sprite a thought bubble with the
                       think Hmm...   for 2   seconds     desired  text  which stays for  a specified  number of
                                                          seconds.

                       think Hmm...                       This block gives the sprite a thought bubble with the
                                                          desired text.

                                                          This block  changes the appearance  of the sprite  by
                        switch costume to  costume2
                                                          switching its costume.

                                                          This block changes the costume of the sprite to the next
                       next costume
                                                          costume in the costume list.

                                                          This block changes the size of the sprite by the desired
                       change size by  10
                                                          proportion.

                                                          This block  sets  the  size  of the  sprite  to  a specified
                       set size by  100 %
                                                          percentage of the original size.

                                                          This block changes the visual effect applied to the sprite
                       change color   effect by 25
                                                          by the specified amount.

                       set  color  effect to 0            This block sets the visual effect to a specified number.

                                                          If the block’s sprite is hidden, it will show the sprite. If
                       show
                                                          the sprite is already visible, nothing will change.

                                                          If the block’s sprite is visible, it will hide the sprite. If the
                       hide
                                                          sprite is already hidden, nothing will change.

                                                                                                     Blocks in Scratch  73

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