Introduction to the Customize Muffins Project

• In this lesson, we will create a fun customization project using Scratch.
• In this project, we will make muffins by clicking buttons to change the dough, flavor, and toppings.
• This lesson helps students understand sprites, costumes, buttons, broadcast messages, layering, and alignment in Scratch.

What Students Will Learn

• How to create multiple costumes for a sprite
• How to duplicate sprites to make new parts
• How to use buttons to control sprites
• How to use broadcast messages to communicate between sprites
• How to switch costumes using next costume
• How to keep sprites fixed in one position
• How to bring a sprite to the front layer for visibility
• How to align multiple sprite parts properly

Adding and Preparing Sprites

Muffin Dough Sprite

• Click on Choose a Sprite and add a muffin sprite
• Rename it Muffin Dough (this will be the bottom part of the muffin)
• Go to Costumes
• Delete extra costumes not needed
• Duplicate the costume 3–4 times for variations
• Use the paint bucket tool to change dough colors

Muffin Flavor Sprite

• Duplicate the Muffin Dough sprite and rename it Muffin Flavor
• In Costumes, delete the bottom dough part so only the top part remains
• Duplicate the top part 4 times to make different flavors
• Use the paint bucket tool for colors:
  • Brown: Chocolate
  • Pink: Strawberry
  • Blue: Blueberry
  • Yellow: Lemon

Muffin Toppings Sprite

• Duplicate the Muffin Flavor sprite and rename it Muffin Toppings
• In Costumes, create different toppings:
  • Costume 1: Chocolate chips
  • Costume 2: Sprinkles
  • Costume 3: Frosting
  • Costume 4: Blueberries
• Delete the background in each costume after drawing toppings

Adding Buttons

• Add three button sprites from Choose a Sprite
• Rename buttons: Dough, Flavor, Toppings
• Edit the costumes of each button to display text: Dough, Flavor, Toppings
• Explanation: These buttons will control which part of the muffin changes

Using Broadcast Messages

Changing Dough

• On the Dough button:
  • Add when this sprite clicked
  • Add broadcast and create a message called Change Dough
• On Muffin Dough sprite:
  • Add when I receive Change Dough
  • Add next costume from Looks
• Explanation: Clicking the Dough button changes the dough costume

Changing Flavor

• On the Flavor button:
  • Add when this sprite clicked
  • Broadcast a message called Change Flavor
• On Muffin Flavor sprite:
  • Add when I receive Change Flavor
  • Add next costume

Changing Toppings

• On the Toppings button:
  • Add when this sprite clicked
  • Broadcast a message called Change Toppings
• On Muffin Toppings sprite:
  • Add when I receive Change Toppings
  • Add next costume

Keeping Muffin Parts in Place

• On Muffin Dough sprite:
  • Add when green flag clicked
  • Add go to x: ___ y: ___ (set desired position on stage)
  • Wrap in forever block to keep position fixed
• Repeat the same for Muffin Flavor and Muffin Toppings sprites

Keeping Toppings on Front

• On Muffin Toppings sprite:
  • Add go to front layer from Looks
• Explanation: Ensures the toppings are always visible on top of dough and flavor

Aligning Sprites

• Make sure all costumes of dough, flavor, and toppings are properly centered in the paint editor
• Explanation: Proper alignment ensures the muffin parts sit correctly on top of each other

Summary of What Students Learned

• How to create and duplicate sprites
• How to make multiple costumes for different variations
• How to create buttons to control other sprites
• How to use broadcast messages
• How to switch costumes using next costume
• How to fix sprites in one position
• How to bring a sprite to the front layer
• How to align costumes for correct layering

Task for Students

• Create your own customization project:
• Use different objects like cakes, donuts, or waffles
• Add multiple costumes for each part
• Use buttons and broadcast messages to control changes
• Ensure all parts are aligned and toppings are on top
• Make your project colorful and fun