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1. Which block category instructs the sprite to play music?
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uiz Bee 2. Which operator allows you to do arithmetic calculations?
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PEN BLOCKS
Pen blocks provide a trail for the sprite and give instructions to change the colour, size and shade
of the trail. These blocks are colour-coded as dark green and used to draw shapes in Scratch. In
Scratch, you have to add Pen blocks to the block category. To do so, click on the Add Extension
button at the bottom left corner of the Code tab and select Pen option. The Pen blocks will be
added to the Code tab. Let us read Pen blocks and their functions.
Blocks Functions
pen down It places the pen in the down position.
pen up It disables drawing operations by lifting the pen.
set pen color to It specifies the colour to be used while drawing.
Change pen color by 10 It modifies the colour of a line.
Change pen by 1 It modifies the thickness of the pen.
stamp It draws or stamps the image of a sprite onto the stage.
erase all It erases the pen marks from the stage.
Drawing Polygons
With the Repeat block, you can draw Polygons. Examples of polygons are triangle, square,
pentagon, hexagon, heptagon, octagon, nonagon, decagon, etc.
To draw polygons in Scratch, you must remember three points:
1. You must know the number of sides in the shape. This is the value to be given in repeat
block.
2. Each time a repeat command is used, you draw a line and turn at a corner.
3. You must know the 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.
82 Premium Edition-VI

