4.1.6

Turning an Algorithm into an App (2/2)

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Turning an Algorithm into an App

You need to follow a few more steps to complete your app.

Event and Control blocks

Event and Control blocks

  • You then need to add blocks of code called 'Event and Control blocks'.
  • Event and Control blocks give ‘if … then’ and ‘repeat until…’ instructions.
Examples

Examples

  • Event and Control blocks control the following in the basketball game:
    • What happens if the mouse is moved? → the red block moves.
    • What happens if the ball touches a wall or the hand? → the ball bounces.
Other examples

Other examples

  • Event and Control blocks control the following in the basketball game:
    • What happens if the ball touches each ‘basket’? → the score of the shooting team goes up.
    • When does the game end? → first team to get to 5 points.
Variables blocks

Variables blocks

  • Blocks of code that create variables are called variable blocks.
    • Variables are things that can change.
  • Variable blocks of code give instructions for the selection of:
    • the colour, time, distance, the angle of bounces, etc.
Jump to other topics
1

Using Computers

1.1

Computers as a Tool

1.1.1Uses of Computers1.1.2More Uses of Computers1.1.3Advantages of Information Technology1.1.4More Advantages of Information Technology
1.2

Data

1.2.1Storing Data1.2.2Databases1.2.3Sorting & Filtering Data1.2.4Interrogating Data
1.3

Plagiarism & Illegal Sharing

1.3.1Plagiarism1.3.2Copyrighted Content
2

Networks & the World Wide Web

2.1

Networks

2.1.1Parts of Networks2.1.2The Internet2.1.3The World Wide Web
2.2

Searching Online

2.2.1Searching the World Wide Web2.2.2Searching Tips2.2.3Reliable Information
2.3

Protecting Yourself Online

2.3.1Your Digital Footprint2.3.2Being Safe2.3.3Online Safety2.3.4Viruses2.3.5Malware2.3.6People Online2.3.7Your Feelings2.3.8Getting Help
3

Computational Thinking

3.1

Computational Thinking

3.1.1Computational Thinking3.1.2Decomposing Tasks3.1.3Algorithms (1/2)3.1.4Algorithms (2/2)3.1.5Logical Reasoning & Debugging
4

Computer Languages

4.1

Coding

4.1.1Code4.1.2Programs4.1.3Writing Programs4.1.4Writing Your Own Program: Input, Outputs, Design4.1.5Turning an Algorithm into an App (1/2)4.1.6Turning an Algorithm into an App (2/2)

Practice questions on Turning an Algorithm into an App (2/2)

Can you answer these? Test yourself with free interactive practice on Seneca — used by over 10 million students.

  1. 1
    What kind of blocks give ‘=if= … =then=’ and ‘=repeat until=…’ instructions?Multiple choice
  2. 2
    What blocks tell the game what to do when something happens or needs repeating?Multiple choice
  3. 3
    What kind of instructions do Event and Control blocks give? Multiple choice
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Turning an Algorithm into an App (1/2)