Scratch 11

Scratch Materi 11: Variables in Interactive Projects

Menggunakan Variable untuk Membuat Project Interaktif | Using Variables to Create Interactive Projects

1. Tujuan Pembelajaran | Learning Objectives

• Memahami bagaimana variable membuat project menjadi interaktif.
  Understand how variables make a project interactive.
• Menggunakan variable untuk menyimpan Score, Lives, dan Timer.
  Use variables to store Score, Lives, and Timer.
• Menghubungkan Event, Condition, dan Variable.
  Connect Events, Conditions, and Variables.
• Membuat mini-game sederhana menggunakan variable.
  Create a simple mini-game using variables.

2. What Makes a Project Interactive?

Project disebut interactive ketika pengguna dapat melakukan sesuatu dan program memberikan respons terhadap tindakan tersebut.

An interactive project responds to what the user does.

Event

Menentukan kapan program mulai melakukan sesuatu.
An Event tells the program when to start an action.

when green flag clicked

Variable

Menyimpan informasi yang dapat berubah.
Stores information that can change.

score lives timer

Response

Program memberikan respons terhadap tindakan pemain.
The program responds to the player's action.

change score by 10

3. Three Useful Variables

Score

Menyimpan jumlah poin pemain.
Stores the player's points.

change score by 10

Lives

Menyimpan jumlah kesempatan pemain.
Stores the player's remaining lives.

change lives by -1

Timer

Menyimpan atau menunjukkan waktu permainan.
Stores or shows the game time.

change timer by -1

4. Vocabulary

Scratch Term	Bahasa Indonesia	English Explanation
Interactive Project	Project interaktif	A project that responds to the user's actions.
Score	Nilai atau poin	A value that represents the player's points.
Lives	Kesempatan	A value that represents remaining chances.
Timer	Pengatur waktu	A value used to represent time.
Event	Kejadian pemicu	An action that starts a script.
Response	Respons	What the program does after an action.

5. Practice: Interactive Score

Klik tombol untuk membantu CAT mendapatkan poin. Perhatikan perubahan Score pada Stage.

Click the buttons to help CAT collect points. Watch the Score change on the Stage.

score: 0

+10

CAT

6. Challenges

Drag blocks dari Block Library ke Script Area. Kemudian jalankan program dan perhatikan Stage.

Drag blocks from the Block Library to the Script Area. Then run the program and watch the Stage.

Challenge 1: Catch the Point

Goal: CAT bergerak menuju target dan mendapatkan 10 points.
CAT moves toward the target and gets 10 points.

Block Library

when green flag clicked

move 50 steps

change score by 10

change score by 5

Script Area

Drag blocks here

score: 0

+10

CAT

Challenge 2: Lives

Goal: Jika CAT terkena obstacle, Lives berkurang 1.
If CAT hits an obstacle, Lives decreases by 1.

Block Library

when green flag clicked

move 50 steps

if

touching obstacle

change lives by -1

Script Area

Drag blocks here

lives: 3

BAD

CAT

Challenge 3: Score and Lives

Goal: Jika berhasil mendapatkan target, Score bertambah. Jika terkena obstacle, Lives berkurang.
If CAT reaches the target, Score increases. If CAT hits the obstacle, Lives decreases.

Block Library

when green flag clicked

move 50 steps

if

touching target

change score by 10

touching obstacle

change lives by -1

Script Area

Drag blocks here

score: 0

lives: 3

+10

CAT

Challenge 4: Mini Game

Goal: Buat mini-game menggunakan Event, Condition, Score, dan Lives.
Create a mini-game using Event, Condition, Score, and Lives.

Game Rule:

CAT memiliki 3 lives. Setiap berhasil mencapai target, score bertambah 10. Jika terkena obstacle, lives berkurang 1.

CAT has 3 lives. Each successful target gives 10 points. Hitting an obstacle decreases lives by 1.

Block Library

when green flag clicked

move 100 steps

if else

touching target

change score by 10

change lives by -1

Script Area

Drag blocks here

score: 0

lives: 3

GOAL

CAT

7. Reflection

Centang pernyataan yang sesuai dengan pemahamanmu.
Check the statements that match your understanding.

Saya memahami bahwa variable dapat membuat project menjadi interaktif.
I understand that variables can make a project interactive. Saya dapat menggunakan Score dalam sebuah project.
I can use Score in a project. Saya memahami fungsi Lives.
I understand the purpose of Lives. Saya dapat menggunakan Condition bersama Variable.
I can use Conditions together with Variables. Saya dapat menjelaskan bagaimana sebuah mini-game menggunakan Variable.
I can explain how a mini-game uses Variables.

8. Quiz | Kuis

1. Mengapa variable penting dalam interactive project?
Why are variables important in an interactive project? A. Untuk menyimpan informasi yang dapat berubah / To store information that can change B. Untuk mengganti nama Scratch / To rename Scratch C. Untuk menghapus Stage / To delete the Stage

2. Variable apa yang biasanya digunakan untuk menyimpan poin?
Which variable is commonly used to store points? A. Score B. Lives C. Costume

3. Jika Lives = 3 dan program menjalankan change lives by -1, berapa Lives sekarang?
If Lives = 3 and the program runs change lives by -1, what is the new value? A. 4 B. 2 C. 1

4. Apa yang membuat sebuah project disebut interactive?
What makes a project interactive? A. Project hanya menampilkan gambar / It only displays pictures B. Project merespons tindakan pengguna / It responds to user actions C. Project tidak memiliki variable / It has no variables

5. Dalam sebuah game, Score dan Lives dapat digunakan bersama dengan apa?
In a game, Score and Lives can be used together with what? A. Conditions and Events B. Only Backdrops C. Only Costumes

9. Next Lesson

Sekarang kita sudah dapat menggunakan Variable untuk membuat project lebih interaktif.

Now we can use Variables to make projects more interactive.

Materi berikutnya: Designing a Simple Scratch Game.