Page 90 - TGPT_V5.0_C4_Flipbook
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stamp  block creates a duplicate of the current sprite. To see the image, click on the sprite
                 and drag.

                      pen up  block puts the pen up and stops the sprite from drawing anything.

                 The sprite draws a non-stop line wherever it moves using              pen down .

                      set pen color to    block sets the colour of the pen to a colour of your choice from the

                 drop-down menu.
                      Change pen color  by 10  block  changes  the  pen  colour, saturation, brightness  and

                 transparency. Click on the first text box to select and change the pen effects. Click on the
                 second text box to give a value by which the effect will change.

                      set pen color  to  50  block will set the pen colour, saturation, brightness and transparency
                 to the given value.

              To view the line in full screen, click on Full Screen Control button            on the top right corner
              of the stage.



                       Double Tap                                                      Century   #Critical Thinking
                                                                                         21 st
                                                                                         Skills
                     Write the uses of the following blocks:

                        1.      set pen color  to  50                      2.      stamp




                        3.      Change pen color  by 10








                    DRAWING POLYGONS IN SCRATCH

              Polygons are 2D shapes with three or more straight lines and angles. Examples of polygons

              are triangle, square, rectangle, quadrilateral, pentagon, octagon, etc.
              To draw polygons in Scratch, you must remember a few thumb rules. They are:


                  Number of sides in the shape
                 This is the value to be given in repeat block. For example, you give Repeat 3 to draw a
                 triangle and 4 to draw a square.

                  Degree of the angle at the corner

                 It is very easy to calculate this. Just divide 360 by the number of sides in the shape. For
                 example, to draw a triangle, the turn will be 360/3 (sides of the triangle) = 120.




                  88  Premium Edition-IV
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