After School Scratch Club – Lesson 1Sprites, Costumes, and Motion

Nov 6, 2013 - 45 minutes

Supplies Needed:1. Scratch on computers logged into RedmondGrizzlies account

user: RedmondGrizzlies pass: Redmond2. Paper and pens for drawing3. Blue tape4. Bubble pop reference: http://scratch.mit.edu/projects/13304514/

Welcome/IceBreakerExpectations

Be respectful, be kind, be engagedObjectives

Learn what a “Sprite” is Discover how a computer interprets movement Create a movable sprite

Students will be asked to Choose a character they like from their favorite video game Draw that character on the supplied paper Tell name, grade, and name of character

Lesson Overview (40min)1. What does “move” mean to a computer? (15 min)

o Leaders give demonstration with blue tape on how to moveo Have students give us directions

2. How does your character move? (5 min)o Break into groups and talk about your character’s movement

3. Let’s make a Sprite! (5-7 min)o Get on Scratcho Show Sprite UIo Make Sprite

4. Basic Movement (15 min)o Step by step show left, right movement while introducing UI

Extra: Show how to make sprite jump

Closing Activity Break into small groups – share progress Reflect as large group Free time

Lesson

1. What does “move” mean to a computer? (15 min)o Leaders give demonstration with blue tape on how to move

1. Start in square on floor2. Give directions from simple to more complex3. Include students4. Focus on: direction, turning, number of steps, rotational

style, if then, forever, repeat

2. How does your character move? (5 min)o Break into groups and talk about your character’s movemento What can your character do and not do? What are its limitations?

How do you create movement? What buttons do you press?

3. Let’s make a Sprite! (5-7 min)o Get on Scratch

1. Create new project2. Name Project

o Show Sprite UI1. What is a Sprite?

“You can give instructions to a sprite, telling it to move or play music or react to other sprites. To tell a sprite what to do, you snap together graphic blocks into stacks, called scripts. When you click on a script, Scratch runs the blocks from the top of the script to the bottom.”

o Make Sprite 1. Choose Sprite from Library and edit (costumes) or paint new2. Make sure painted sprite is centered3. Leaders circle room to supervise, give ideas

4. Basic Movement (15 min)o Click on your sprite – each sprite has its own set of script so it

knows what to do o Events: these blocks sense events and trigger scripts

1. Drag “When flag is clicked” – this means your program will run when we click the flag button

o Control: these blocks control scripts1. Drag “forever” and connect to flag block2. Drag “if then” and insert inside forever loop (we will put

everything inside the forever loop)o Sensing: these blocks detect things

1. Drag “key pressed” and put inside if statement2. Change key to right arrow

o Motion: control a sprite’s movement1. Drag “point in direction” and put inside if then 2. Set to 90 degrees 3. Drag “move steps” and put inside if then 4. Set to 10 degrees

o Test right keyo Now do left! o

5. Extra: Show how to make sprite jumpo Operators: do math equations