Events

Summary

Materials

• Day 4 PowerPoint deck
• My Galga Game
• MakeCode Arcade

Instructional Activities and Classroom Assessments

1. Algorithm Review (5 minutes)
2. Introduce Events (10 minutes)
3. Create Galga Game (25 minutes)
4. Modify Galga Game (10 minutes)

Learning Objectives

• AAP-2.B Represent a step-by-step algorithmic process using sequential code statements. 2.B
• CRD-2.I For errors in an algorithm or program: a.) Identify the error. b.) Correct the error. Computational Thinking Practices: Skills 4.C
• CRD-2.C Identify input(s) to a program. 3.A

Essential Knowledge

AAP-2.B.1 Sequencing is the application of each step of an algorithm in the order in which the code statements are given. AAP-2.B.2 A code statement is a part of program code that expresses an action to be carried out. AAP-2.B.6 Sequential statements execute in the order they appear in the code segment.

• CRD-2.I.2 A syntax error is a mistake in the program where the rules of the programming language are not followed.
• CRD-2.C.2 An event is associated with an action and supplies input data to a program.
• CRD-2.C.3 Events can be generated when a key is pressed, a mouse is clicked, a program is started, or any other defined action occurs that affects the flow of execution.

Details

1. Algorithm review (5 minutes)

• What are the three types of constructs used in algorithm implementations?
• How does a debugger help your coding?

2. Introduce Events (10 minutes)

• Define an event.
• Explain what an event handler is.
• Identify event handlers in a program.
• Explore event handlers in MakeCode.
• Trace code for the Which Button? program.
• Follow an event in MakeCode debugger.

3. Create Galga game (25 minutes)

• Guide students through creating a game that uses several event handlers:
  • On start
  • On game update
  • On A button pressed
  • On sprite overlaps
• Ask students to publish their game and post the link to their My Galga Game page.
• Encourage students to save their game to their computer also.
• Have students play their game a few times to see how it works.

4. Modify Galga game (10 minutes)

• Encourage students to modify their Galga game to make it unique.
• Students should explore other game features and insert items they feel will work with their vision for the game.
• Show them how to learn what different blocks do by using the Help feature.
• Encourage students to add comments to the blocks they add.
• Ask students to re-publish their game and add the link to their My Galga Game.