Scratch programming – balloon pop

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Theme

Balloon Pop Game: Balloons appear on the screen in random colors and positions. Players will use their head or finger to pop the balloons and earn points. This game has a time limit, and the goal is to achieve the highest score within that time limit.

Content

  • Extension – Video Sensing: Setting up video sensing for head or finger interaction.
  • Variables: Creating and updating “score” and “time” variables.
  • Loop – Wait: Using the “wait” block for controlled timing.
  • Motion: Using “go to random position” for balloon placement.
  • Looks: Hiding and showing sprites for game dynamics.
  • Sound: Playing a sound when a balloon is popped.

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Description

Description

Theme

Balloon Pop Game: Balloons appear on the screen in random colors and positions. Players will use their head or finger to pop the balloons and earn points. This game has a time limit, and the goal is to achieve the highest score within that time limit.

Content

  • Extension – Video Sensing: Setting up video sensing for head or finger interaction.
  • Variables: Creating and updating “score” and “time” variables.
  • Loop – Wait: Using the “wait” block for controlled timing.
  • Motion: Using “go to random position” for balloon placement.
  • Looks: Hiding and showing sprites for game dynamics.
  • Sound: Playing a sound when a balloon is popped.

 

Module 4: Characters and Sprites Lesson 17: Balloon Pop Game

Objective: Teach students how to create a Balloon Pop game using the video sensing extension, variables, loops, motion, looks, and sound blocks in Scratch.

Introduction:

  • Introduce the “Balloon Pop” game concept: Players pop balloons that appear on the screen to earn points within a time limit.

Content:

1. Extension – Video Sensing:

  • Explain video sensing: detecting user actions through camera input.
  • Introduce using head or finger movement to interact with the game.

2. Variables:

  • Introduce the “score” variable to track the player’s points.
  • Discuss the “time” variable for the game’s time limit.

3. Loop – Wait:

  • Explain the “wait” block for controlling time intervals.
  • Use it to control the appearance of balloons.

4. Motion:

  • Discuss motion blocks for controlling sprite movement.
  • Use the “go to random position” block for balloon placement.

5. Looks:

  • Introduce the “hide” and “show” blocks for sprite visibility.
  • Demonstrate how to hide popped balloons.

6. Sound:

  • Introduce sound blocks for adding audio effects to the game.
  • Explain how to play a sound when a balloon pops.

Scratch Commands Covered:

  • Extension – Video Sensing: Setting up video sensing for head or finger interaction.
  • Variables: Creating and updating “score” and “time” variables.
  • Loop – Wait: Using the “wait” block for controlled timing.
  • Motion: Using “go to random position” for balloon placement.
  • Looks: Hiding and showing sprites for game dynamics.
  • Sound: Playing a sound when a balloon is popped.

Activities:

1. Video Sensing Setup:

  • Explain how video sensing works and its relevance to the game.
  • Guide students in setting up video sensing for head or finger interaction.

2. Variables Setup:

  • Create and initialize “score” and “time” variables.

3. Balloon Placement and Appearance:

  • Use the “go to random position” block to position balloons.
  • Introduce the “hide” and “show” blocks to control balloon visibility.

4. Wait Loop for Gameplay:

  • Introduce the “wait” block to control balloon appearance intervals.
  • Use it within a loop to keep the game running.

5. Interactivity and Scoring:

  • Teach how to detect head or finger interactions using video sensing.
  • Program the game to update the score when balloons are popped.

6. Sound Effects:

  • Integrate sound blocks to play a sound when a balloon is popped.

7. Time Limit and Ending the Game:

  • Use the “time” variable to set a time limit for the game.
  • End the game when the time limit is reached and show the final score.

Conclusion:

  • Recap the concepts learned: video sensing, variables, loops, motion, looks, and sound blocks.
  • Encourage students to fine-tune gameplay dynamics and sound effects.
  • Discuss the importance of playtesting and user experience.

Assessment:

  • Assess understanding through questions and discussions during the lesson.
  • Evaluate student projects based on the functioning Balloon Pop game.
  • Have students demonstrate their games and explain how they applied the concepts covered.

Remember to provide ample time for hands-on practice, experimentation, and troubleshooting. The video sensing aspect adds a unique interactive element to the game, which can engage students and enhance their learning experience.