Learn Scratch Programming: Youth Code Now Inc After School Program
Dive into Scratch programming with Youth Code Now Inc's after school program. Explore Sprite characters, stage backgrounds, and various blocks that control movement, looks, and sound in Scratch. Discover how to make your character spin and experiment with different blocks for fun and interactive learning experiences.
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Presentation Transcript
Youth Code now, Inc. Youth Code now, Inc. after school program Scratch Lesson 3 Scratch Lesson 3
Scratch Lessons Sprite is A character on the screen A character acts on the stage. The background for the sprite is called Stage OR backdrop. Question: What is the default sprite in Scratch? Can you show me where the stage area in scratch is? Where is the script area in scratch? Scratch Lesson 3 2
Scratch Lessons Scratch Lesson 3 3
Scratch Lessons Can you show me where I can find the nine different colored circles on the scratch project editor? Scratch Lesson 3 4
Scratch Lessons These nine different colored circles are called blocks. Scratch Lesson 3 5
Scratch Lessons Motion blocks are the blocks that control a Sprite's movement. Scratch Lesson 3 6
Scratch Lessons Looks blocks are the blocks that control how a sprite looks Scratch Lesson 3 7
Scratch Lessons Sound blocks are the blocks that control sound. Scratch Lesson 3 8
Scratch Lessons With scratch you can make your character spin. Let s try to spin our default sprite, which is the cat. Question: Which block should I use? I must use the blocks that control a Sprite s movement! Is it Look Blocks, Motion Blocks or Sound Blocks? Scratch Lesson 3 9
Scratch Lessons What does this block do? grab this piece of block and drop it to the script area Scratch Lesson 3 10
Scratch Lessons What happen if you click that block? Click this block Scratch Lesson 3 11
Scratch Lessons Great, we see the cat turns by 90 degrees when you click this piece of block Click this block But I want the cat to start turning when I click on the green flag Scratch Lesson 3 12
Scratch Lessons The green flag block is located under the Events blocks And Events blocks are blocks that activates the scripts. Scratch Lesson 3 13
Scratch Lessons Let s drag the green flag block and then snap the two blocks together Do you see that when you click the green flag, the script activates Scratch Lesson 3 14
Scratch Lessons Each time you click the green flag, the cat turns by 15 degrees in the clockwise direction. Question How do I make the cat spin around a loop? Or spin continuously? Scratch Lesson 3 15
Scratch Lessons Loop We don t have to click the green flag block again and again. How? By using a c shaped block called a loop! Scratch Lesson 3 16
Scratch Lessons Loop C shaped blocks are found under the Control Blocks Scratch Lesson 3 17
Scratch Lessons Repeat Loop A loop that repeats the specified number of times. Scratch Lesson 3 18
Scratch Lessons Forever Loop A loop that will never end Scratch Lesson 3 19
Scratch Lessons Let s grab the turn block and snap it within the forever block, and then you need to snap the forever with the green flag block. Scratch Lesson 3 20
Scratch Lessons Now when you hit the green flag, the sprite will spin around forever. Scratch Lesson 3 21
Scratch Lessons To make the sprite stop, hit the red stop button. Scratch Lesson 3 22
Scratch Lessons What do you think will happen if I add the move block inside the forever block? Scratch Lesson 3 23
