Why is the sprite not going back to where I want it? Can sprites move by themselves? What block can make sprites go somewhere? What x/y position do you need to put in the go to x: () y: () block? When do the characters in a game/story/movie go to their starting positions? At the start, middle or end? go to x: () y:() at the start (Just under the when green flag clicked block) TIP: Drag the sprite to the desired position, then when taking a go to x: () y:() block it will have the current coordinates Why is the glide () secs to x: () y: () block not making the sprite move? Where is the glide () secs to x: () y: () block telling the sprite to go? Where is the sprite now? Should the glide () secs to x: () y: () start from somewhere else? Where should the go to x: () y: () block be put? (See Why is the sprite not going back to where I want it?) glide () secs to x: () y:() at the start (Just under the when green flag clicked block) TIP: Drag the sprite to the desired position, then when taking a glide () secs to x: () y:() block it will have the current coordinates How do I make another sprite do something? What blocks can you use to tell a sprite something? broadcast (message1 v) and when I receive (message1 v) broadcast (message1 v) from the sprite/stage that is sending the message. when I receive (message1 v) in the sprite/stage that will receive the message The copies aren't moving Is the code running on the **copies** or the **original**? How can I make something move to a different position each time? Is there any block that does things randomly? go to (random position v) How can I get a different number each time (for example, to move to a different position in only the x/y direction, or to turn a different amount)? Is there any block that gives you a random number? What numbers do you need to put in that block? The pick random () to () block provides a *random number* in the range between the left box and the right box, inclusive. This means that pick random (1) to (10) could provide either 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10. Why is the sprite running the code below (e.g. moving) while still talking? Which say::looks block are you using? Do you want to use the say::looks block that takes time to finish running? The say [] block continues to the code below immediately. The say [] for () seconds block keeps the speech bubble up for the specified number of seconds, during which time the code stays paused on the say [] for () seconds block. Why is the sprite stuck talking instead of running the code below (e.g. dancing)? Which say::looks block should you be using? The say [] for () seconds block keeps the speech bubble up for the specified number of seconds, during which time the code stays paused on the say [] for () seconds block. The say [] block continues to the code below immediately. Why is the sprite stuck playing the sound instead of running the code below (e.g. dancing)? Which sound block are you using? Do you want to use the sound block that takes time to finish running? The play sound ( v) until done block plays the sound to completion, during which time the code stays paused on the play sound ( v) until done block. The start sound ( v) block continues to the code below immediately. Why is the sprite running the code below (e.g. moving) while still playing the sound? Which sound block should you be using? The start sound ( v) block continues to the code below immediately. The play sound ( v) until done block plays the sound to completion, during which time the code stays paused on the play sound ( v) until done block. Where can you find blocks for when something happens? The when::hat events blocks can be found in the Events tab. How do I make something happen when a key is pressed (up/down/left/right key)? Use the when [up arrow v] key pressed block How do I make something happen when the project goes to a different background/story location? Use the when backdrop switches to [backdrop1 v] block The <touching color [#0000FF]?> block isn't working? Is is it checking with the correct color? How can you select the correct color? By clicking on the colored oval (input), then clicking the "eyedropper" symbol, you can then click anywhere on the stage to use that exact color. `TODO(Keith): Add screenshot` How do I compare numbers or words? Are there any blocks that use the math symbols for comparing numbers? The <() > ()>, <() < ()>, and <() = ()> blocks work as expected in maths. How can I check if a number is "less than or equal to" or "greater than or equal to"? Is there a block that lets you check if something or something else is true? Use the <<> or <>> block, with a <() > ()> block on the left, and a <() = ()> block on the right. This expresses the meaning of the ≥ expression in maths. For a ≤ expression, use a <() < ()> condition on the left side of the <<> or <>> block.

<<(...) > (50)> or <(...) = (50)>>
<<(...) < (50)> or <(...) = (50)>>
    

Racing game

Make a racing game, with two players (one can use the A key, and the other can use the L key)

Make sure the cars reset to the starting line when the game starts

How do you reset the position? Should both player’s cars be at the same place, or different places?

when green flag clicked
go to x: (...) y: (...)

when [a v] key pressed
move (10) steps

when [l v] key pressed
move (10) steps
  

Breathing

Make the sprite “breathe” (getting bigger and smaller)

Size should stay between 95 and 105

Increase the size until it is more than 105 Next, decrease the size until it is less than 95 Last, make the first 2 steps repeat (forever?)

when green flag clicked
forever
  repeat until <(size) > (105)>
    change size by (1)
  end
  repeat until <(size) < (95)>
    change size by (-1)
  end
end
  

Spiral

Using the Pen extension, draw a square

Do it forever

Try changing the angle each turn (85 or 95 instead of 90)

Try adding more move and turn blocks in the loop

Try adding a repeat inside the loop

Keep going! Add more move, turn and repeat blocks inside the loop

when green flag clicked
forever
  move (100) steps
  turn cw (90) degrees
end
  

when green flag clicked
forever
  move (100) steps
  turn cw (85) degrees
end
  

when green flag clicked
forever
  move (100) steps
  turn cw (85) degrees
  move (30) steps
  turn ccw (15) degrees
end
  

when green flag clicked
forever
  move (100) steps
  turn cw (85) degrees
  move (30) steps
  turn ccw (15) degrees
  repeat (15)
    move (5) steps
    turn cw (7) degrees
  end
end
  

when green flag clicked
forever
  move (100) steps
  turn cw (85) degrees
  move (30) steps
  turn ccw (15) degrees
  repeat (15)
    move (5) steps
    turn cw (7) degrees
  end
  repeat (7)
    move (10) steps
    turn cw (4) degrees
  end
end
  

Character Maker

Make a project to select and combine different head/body/legs

Should the different heads be the same sprite or multiple sprites? What about the body and leg parts? How can you switch between looks of the head/body/leg sprite? Add 1 Head sprite, 1 Body sprite, and 1 Legs sprite Add multiple costumes to each part of the character

when this sprite clicked
next costume
  

Painting

Make a project that lets you draw using the mouse, and lets you set the pen up/down

when green flag clicked
forever
  go to (mouse-pointer v)
end

when [up arrow v] key pressed
pen up

when [down arrow v] key pressed
pen down
  

Loudness Meter

Make a sprite that moves up/down based on how loud it is

Have a background that the sprite moves from "quiet" to "loud" (bottom = quiet, top = loud)

Is there a block to see the current loudness? Can you use the loudness block as part of the change position block? If it's not moving enough, can you multiply the position?

when green flag clicked
go to [front v] layer
forever
  set y to ((10) * (loudness))
end
  

Dress Up

Make a project that lets you put "clothes" on a character

Have at least 2 each of shirts, pants, and accessiories (for example, hat or sunglasses)

When you click on the clothes, it will move onto the character at the correct places

Where should each piece of clothing start? Where should it go? How do you make it go from one place to another? How can you make code run when you click something?

when green flag clicked
go to x: (...) y: (...)

when this sprite clicked
glide (...) secs to x: (...) y: (...)
  

Storytime

This project will ask the player for certain words, then put it together into a story

For example, it can ask for a name, an animal and a food

Then it will combine it into the sentence “Name fed the animal with food”

Assuming the name is “John”, the animal is “cat” and the food is “pizza”, the sentence would become “John fed the cat with pizza”

How can you ask something using Scratch? How do you get the answer? Can you join sentences/words together?

when green flag clicked
ask [Give a name] and wait
set [name v] to (answer)
ask [Give an animal] and wait
set [animal v] to (answer)
ask [Give a food] and wait
set [food v] to (answer)
say [Your story:] for (2) seconds
say (join (name) (join [ fed the ] (join (animal) (join [ with ] (food)))))
  

Rain

Make many raindrops fall down the screen

How do you get many things from one sprite? Should the original be falling down or the copies? Should it go down in a straight line? To be in a straight line downwards, should the x position or the y position stay the same?

when green flag clicked
forever
  wait (0.5) seconds
  create clone of [myself v]
end

when I start as a clone
go to (random position v)
set y to (250)
glide (4) secs to x: (x position) y: (-250)
  

Elevator (Lift)

Make a project that shows a tall building with a lift

Add buttons to make the lift go to the top and bottom

Add buttons to go up/down by 1 floor

Add buttons to open and close the lift's doors

Should the opened and closed lift images be a separate sprite or the same?

when this sprite clicked
broadcast [go to top v]
  

when this sprite clicked
broadcast [go up v]
  

when this sprite clicked
broadcast [open v]
  

when I receive [go to top v]
go to x: (...) y: (...)

when I receive [go up v]
change y by (...)

when I receive [open v]
switch costume to (lift-open v)
  

Clicker Game

Make a game that counts how many times you click a sprite

Let the player buy "powerups" that increases the score more each time the player clicks

For example, a powerup could "cost" (subtract) 25 clicks, but give you 5 clicks each time instead of 1

How can you make code run when you click something? How can you keep track of the number of times the sprite is clicked? Can you change the click number by more than 1?

when this sprite clicked
change [click v] by (powerup)
  

when green flag clicked
set [powerup v] to (1)

when this sprite clicked
change [click v] by (-25)
set [powerup v] to (5)