Page 79 - Computer - 3

Life Skills
Health Tip

Your neck and head may feel cramps and ache after sitting in front of a computer for an
extended period. Try this neck exercise to relieve the muscles.
1. Stand up straight.
2. Bring your right ear to your right shoulder
without turning your head.
3. Hold for 5 seconds.
4. Repeat with the left ear and shoulder.

Repeat the steps 5-10 times.

Database Subject Enrichment

Scratch was developed in 2003 by MIT Media Lab and The Lifelong Kindergarten

Group for children aged 8-16 years. It was released in 2007. Scratch is co-founded by
Brian Silverman, Paula Bonta, and Mitchel Resnick.

Post-Processing   

 Scratch 3 is an educational, graphic programming language.

 Each file in Scratch 3 is called a project.
 Each project contains one or more characters called Sprites. The Cat sprite is
the default sprite in every Scratch project.

 The background of the Stage is called Backdrop.
 The Go button is used to start the execution of a project. The Stop

button is used to stop the execution of a project.
 Blocks are puzzle-piece shapes that are combined to create code in Scratch.
 The blue-coloured Motion blocks are used to move and turn the sprite in

different directions.
 The purple-coloured Looks blocks are used to change the appearance of a

sprite.
 The orange-coloured Control blocks are used to control the execution of the
scripts.

 The yellow-coloured Events blocks are used to sense events that cause scripts
to execute.

 The Backdrop Library lets you change the backdrop of the Stage.

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