Zmiany
/* Preparation: recognition of the background colour by the sprite */
specified colour. If necessary, we help them (e.g. suggest that it is among sensors). <br/>
::''Students should find a few blocks. Among them, the is '''touching colour'''? Block. If necessary, we
briefly discuss other blocks and explain why they are not going to work in this case.'' <br/>
<br/>
::''We reach the conclusion that it must move. We ask by how many steps. By as many as it moved forward previously. We wonder about which block we should use for movement – we have only one. But in it we can enter the number of steps which the sprite is to add (i.e. move forward). How to put down that now it is to go back? We reach the conclusion that we should subtract the number steps by which the character moved forward. That’s why we enter them with a minus.'' <br/>
[[Plik:maze7.JPG]] <br/>
'''We ask the following question:''' Where should we place these instructions? <br/>
::Together with the students we think about where the instructions should be placed. We should come to the conclusion that the script '''when <up arrow> key is pressed''', which causes the movement of the character, needs to be modified because only when the character moves can it enter a forbidden colour. <br/>
[[Plik:maze8.JPG|center]] <br/>
[[Plik:maze14.JPG|center]]<br/>
::''We discuss whether the word should be displayed continually or only for a moment. That is why we select the block with the display time – '''say... for 2 s'''.'' <br/>
'''Task for self-completion:''' We ask the students to add to the walk script instructions that cause a reaction to the sprite’s reaching the blue square, i.e. the exit. We discuss where to put them. We hint that the structure should be similar to the one used to check whether the sprite reached the colour red. <br/>
::''We allow some time to complete the task, then ask one of the students to show a solution on the interactive whiteboard, and check whether everyone has solved the task.'' <br/>
[[Plik:maze15.JPG]]
