Page 90 - TGPT_V5.0_C4_Flipbook
P. 90
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

