Add extra ingredients to the mix by clicking on them. When you're ready to bake, click on the bowl. Advanced Lesson: 1. Add ingredients in the following order: butter, sugar, eggs, milk, flour 2. Create or import sprites in Scratch for butter, sugar, and flour 3. Change stage when bowl is clicked to “Party” backdrop 4. Add birthday cake sprite playing Happy Birthday when backdrop switches to “Party” 5. Hide all other sprites when backdrop switches to “Party” 6. Show all sprites except birthday cake when green flag is clicked
