Basics to start talking about programming and scratch.

1. UNIT 2_ programming
Technologies 1 ESO
gabriela-teacher.blogspot.com

2. INTRODUCTION
&
FIRST STEPS

3. COMPUTATIONAL THINKING
“Computers are incredibly
fast, accurate and stupid.
Human beings are
incredibly slow,
inaccurate and brilliant.
Together they are powerful
beyond imagination”.
(Leo Cherne, 1968)

4.  Creativity  Solving problems
 Analytical thinking  Understanding data
 Patience  Learning takes a time
 Will  Really wanting to make it happen
 Critical thinking  Using the right tools
 Searching skills  Looking for the right tools
 Abstract thinking  De-coding a problem before coding its solution
 Flexibility  Programming is not a repetitive task
WHAT WILL WE IMPROVE?

5. AN EXAMPLE… LETS COUNT!!
Use your computational thinking skills!! You have
to find a method to answer to this question:
How many people are there at a
demonstration?

6. WHAT IS SCRATCH?
 It’s a slide-and-drop language that allows
children to create games and programs.
 It uses a simple interface of “blocks” that are put
together to make simple codes.
 It’s a language that lets us express feelings,
thoughts or ideas… So it’s very creative!
 In Scratch we work with a group of objects that
communicate in a virtual word.

7. HOW TO START…
 We can download and install Scratch on our
computer:
https://scratch.mit.edu/scratch2download/
 We can use it online: https://scratch.mit.edu/
 If we create an account, we can share our
projects.
 We will create accounts and groups of
students the first day we go to the computer
lab.

8. SCRATCH INTERFACE
STAGE: Shows the results
THUMBNAILS: Shows the sprites and backdrops
BLOCKS: Commands,
costumes and sounds
WORKSPACE: Where
we drag and drop
blocks to create
code

9. THE STAGE AREA
PROJECT’S name
Save, open or
download a project
LANGUAGE
settings
REDUCE/ENLARGE
object
DUPLICATE
object
DELETE
object
FULL SCREEN RUN/STOP program

10. THE THUMBNAILS AREA
SPRITES LIBRARY
(double click)
PHOTO SHOOTING: Use
the webcam to take a
photo
DRAWING PAD: design
from scratch
UPLOAD AN IMAGE
from my computer
to use as sprite or
backdrop
SPRITE’S SETTINGS: Name,
rotation style (linear,
rotatory)…

11. BLOCKS WINDOW
SCRIPTS TAB: Shows
all the blocks by
categories
SOUNDS TAB: A sprite
can have different
sounds that we can
edit or change
COSTUMES TAB: A sprite can
have different costumes to
show a posture, clothing, a
state…

12. STARTING TO PROGRAM!!!
 Access Scratch.
 Start your session with
your username and
password.
 Add two more sprites
from the library to the
stage.
 Reduce or enlarge them
to have them
proportioned.

13. PROGRAMMING SPRITE 1
 Double click on one of
the sprites and program
these comands:
When right arrow key
pressed  Point in
direction 90 & Move 5
steps.
When left arrow key
pressed  Point in
direction -90 & Move 5
steps.

14. ANALYSING THE RESULT
 Click the right and left arrows:
Are you happy with the result?
 Click on the “i” label in your sprite and change
its rotation style to linear.

15. PROGRAMMING SPRITE 2
 Double click on the
second sprite and
program this command:
Since we start (run) the
program  For ever,
point towards the
mouse pointer and
move 5 steps.
 What about this sprite’s
rotation style?

16. PROGRAMMING SPRITE 3
 Double click on the third
sprite and program this
command:
Since we start (run) the
program  For ever,
turn 15 degrees.
CONGRATULATIONS!
Youhavecreatedyour firstprogram