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Module 1 - Getting started in Scratch

Dodane 1881 bajtów, 17:47, 7 lip 2015
'''Then we ask the following question:''' Can you see a block that moves the sprite (kitten) by a number of steps?
''Students should be able to notice the block move by 10 steps.''
 
 
 
[[Plik:C1.png|center]]
 
 
'''We ask the students''' to move the block to the right side of the screen.
'''We ask the following question:''' Is it possible to change the number of steps by which the sprite will move?
''Students should notice that they can change the number of steps by clicking on it, and then typing in a different value.''
'''Task:''' We ask the students to set it to 20 steps.
'''We ask the following question:''' Is there something missing in our programme? Shouldn’t the block we have placed on the right be connected with others?
''The students should realize that both there are elements missing at the top and bottom of the block (as in a jigsaw puzzle).''
'''We explain''' that a programme should have a beginning and an end. It can be run by clicking the green flag in the top right corner of the screen and exited by selecting the red dot next to it. We ask them to use the flag.
'''We ask the following question:''' Did anything happen when you clicked on the flag? ''Answer: No.''
'''We explain''' that this is because our programme has no beginning or end. We ask the students to find the block which will be the beginning. We can give them a hint: it cannot be connected to any other block from the top.
''Students should find the '''when the green flag is clicked''' block.''
 
 
[[Plik:C2.png|center]]
 
 
We ask them to connect it to the block that moves the sprite.
 
 
[[Plik:C3.png|center]]
 
 
We then ask them to find a block ending the programme; this block cannot be connected to any other block from the bottom. We suggest that sometimes it’s impossible to see all the blocks, so we have to use the option of scrolling through the list on which they can be found.
''Students should find the '''stop everything block''' and notice that it can be set to '''stop this script''' or '''stop other sprite scripts'''.''
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