Questions tagged [pset0]

The "Scratch" problem set assigned at the beginning of the course.

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160 views

Functions returning a value?

I'm trying to implement multi-dimensional arrays in Scratch, for an implementation of maze generation. To simplify, I'd like to implement a couple of custom blocks which return a value, e.g. ...
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2answers
139 views

What does it mean “Your project must have at least three scripts total”?

What does it mean "Your project must have at least three scripts total"? Does it mean three structure of "When GREEN_FLAG clicked and so on..."?
2
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1answer
159 views

problem set-0 submitted but no notification about successful submission in the gradebook? [duplicate]

I have submitted my pset0 but it doesn't show that it has been submitted in the gradebook. Does it show like that or i will only receive the grades? My scratch project name is "Bat??...man."
2
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1answer
1k views

Problems with clones sensing “touching” in Scratch

In my game, clones of bats appear and move slowly down the screen and are to be shot down. The biggest problem that I'm having is that for some reason it isn't always registering when the laser bolt ...
2
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1answer
147 views

Not seeing scores after submitting a while ago, what's wrong?

I submitted pset0 and pset1 about a month ago and still no scores. Is this normal or is something wrong?
2
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1answer
95 views

Who I can connect if my problem set 0 haven't been graded?

I have submitted 6 problem set from 0-5, but only the problem set 0 haven't been graded. Who should I contact to inform the ungraded problem set?
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1answer
97 views

Problem set 0, need to fill up requirements

so i was working on problem set 0, I have made a project where when a user points the mouse over an animal it plays it's sound, so far i have been able to use if-else conditions and loops, but it ...
1
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2answers
65 views

Will I still use the Scratch in PSet 1, 2 and so on?

Currently doing the project for pset0 and wondering does the project have to be done completely or it is could be an ongoing project for next problem sets. I started to make the chess game for pset0, ...
1
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1answer
23 views

Complex Scratch Scrips

Just started this course and am working on the problem set. I have found that there are a lot of things that I'd like to do but have never been able to find the right blocks. For example, I want to ...
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1answer
43 views

Why does this check for equality fail to trigger in my Scratch project?

I attempted to make a basic game where you should click the Dragon and not the girl. I wanted to make it so that when you click the girl you lose a health point and when your health point reaches 0 ...
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3answers
48 views

Pset0 - trying to upload a sound

One of the parts of Pset0 is to attach a sound. I found the turkey sound I want but scratch is not recognizing format. Any suggestions?
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1answer
210 views

Subtitle files for problem set 0 videos

Where can I find the SRT files that go with the videos in the problem set 0 specifications?
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1answer
88 views

I can't see problem set 0 at all

I see a specifications bullet and nothing below. I am very interested in this course and I need some help!
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1answer
582 views

How do I submit pset0?

I started the cs50x online course a few days ago and I've just finished my Scratch program for pset0. I'd like to submit it, however I can't find pset0 in the submission interface on http://apps.cs50....
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1answer
96 views

pset 0 submission locked - can I resubmit?

I joined cs50 this week and completed the pset0 assignment. I went to submit and fill out the week 0 survey. I closed the window and now cannot go back. If I try to resubmit I get the following ...
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1answer
279 views

How does the grading system work?

I submitted Pset 0 and got a 1 on the far right of the Gradebook. I'm assuming that's not very good. I was wondering how the grading scale worked and if we would get feedback on the Psets.
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1answer
203 views

More than 1 month since submitting problem set 0, I still have no grade. What can I do?

The project is: http://scratch.mit.edu/projects/24864754/#player Martival is my username in scratch. Problem Set 0 was submitted through https://x.cs50.net/2014/psets/0/ as per instructions and I ...
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1answer
1k views

Do I have to do problem set 0?

I was wondering, do I have to do problem set 0? I already have prior programming experience, and I'm hoping to get an Honor Code certificate, but Scratch seems a bit ridiculous to me (without wanting ...
1
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1answer
99 views

Can't see images for questions in pset0 submission

I submitted problem set 0, but had problems with the images that inform the additional questions we need to answer. This meant I had to guess 3 of the 10 questions on this page. They wouldn't appear ...
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3answers
124 views

Working on PSet0

I am new to CS50! So I am just looking for project ideas that I can actually do at a medium level difficulty. Don't want to get too bogged down with the project itself! Please help! Regards,
0
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1answer
59 views

pset0 - sprite movement problems

I'm new to Scratch and have some problems with movement of sprites. When the sprites move horizontally, it works well. But, when I try moving them diagonally, it warks only sometimes. Here's my ...
0
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1answer
440 views

Where can i see my pset0 grades?

It has been 3 days now after I submitted pset0. I received an email that I have successfully submitted pset0, but where could I confirm it o edx and when would I receive my grades? And an I submit ...
0
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1answer
26 views

Problem with “When I receive message” block

I have some problem with the "When I receive message" block in my scratch project. Sometimes the block worked just fine but other times when the corresponding message was broadcast, after receive the ...
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1answer
76 views

Problem set 0 hexadecimal

How can I learn about hexadecimal for answering the question on problem set 0 ? Are there any shorts? Are there any websites?
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1answer
101 views

How to make the clone of sprite function in scratch?

I am new to scratch... I was trying to make a game in which a clone of a ball is produced every 3 sec..and has to act exactly like the original sprite ball..but that is not the problem. What I want ...
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2answers
2k views

How to solve problem set 0 and how to submit it?

Problem Set 0 specification page has lots of text which makes it confusing. Please help me understand the problem, figure out how to solve it and to submit it!
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2answers
183 views

Where can I find comments on my projects

I have looked in my grade book and I received a 1 for pset0 and a .39 for pset1. Is a 1 the highest score you can get? I thought the psets were graded on a 1-5 scale? For the mario exercise I got a ...
0
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3answers
47 views

Pset0 Cant figure out some bug [closed]

Can someone check why only “Auch” broadcast is working in my "starfish" script and not the “Auch2”? I made them the same way. http://scratch.mit.edu/projects/24876229/
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1answer
226 views

Pset0 - Check50 returns no results

I submitted pset0 this morning and check50 is returning: Submit50 MurilloGuindani Cs50/2018/x/scratch There are no results to display. My account is linked but the courses section displays: "Not ...
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1answer
121 views

How to spawn sprite on random edge axes

In Scratch, how do I spawn a sprite randomly at any point along any of the four edges of the stage? I have tried using a go to motion block with a pick random operator, but of course this limits the ...
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2answers
157 views

How do I submit pset0 using cs50 ide (edx course, 2017), or there is another way?

I've submitted psets 1 to 8 through submit50 on the cs50 ide. Now I want to submit pset0 (the Scratch Project). How can I do so?. I'm using the edx cs50 ide of the 2017 course.
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1answer
123 views

pset0 scratch how to pause the game

I made my game on scratch but I'm having a few problems. One of them if that I couldn't make work the pause/play by pressing P. Also, I think the ball is not bouncing as it should when hitting the ...
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1answer
18 views

Why does sound begin playing when app launched?

I'm late to the party I know but I'm a retired programmer and I plan to catch up quickly. I've used Scratch to teach Hour of Code and I'm basically familiar with it.But my project is currently ...
0
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1answer
96 views

PS0, hexadecimal meaning

I don't understant the third question in PS0: How do you represent the (decimal) integer 50 in, oh, "hexadecimal," otherwise known as "base-16"? Know that decimal is considered "base-10" (since it ...
0
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1answer
115 views

Bug in game of scratch

I have a running project https://scratch.mit.edu/projects/71129428/ the problem is the fish in it stuck sometime and scores keep increase. I was thinking of an idea that i may need to apply id to ...
0
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1answer
52 views

pset0 how to hide or delete object in Scratch

I'm re-generating a fish object in forever loop, i want to work it as if i sense touch to the fish it should disappear / delete while the original fish keep on generating fishes. Everything is going ...
0
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1answer
66 views

SCRATCH: motions stopped working even after no codes were changed

i have a lioness sprite that after clicking her used to turn 90 degrees to the left - glide northwest - then back 90 degrees to the right - now she just glides to the left without turning - i also ...
0
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1answer
130 views

Do we receive feedback for our Psets?

I just submitted Pset0 and wanted to know if I am going to receive grading/feedback/answers soon, or until after the deadline. Thank you
0
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1answer
38 views

Does anyone know why I was unable to see the images from problem set 0?

I was working on problem set 0 and I noticed that the images for the questions were not being displayed. Unfortunately I have submitted the problem set without answering those questions. Does anyone ...
0
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1answer
95 views

PSet 0 Submission Errors

I understand that you have to submit Problem Set 0 to this address, http://cs50.edx.org/2015/psets/0/ . However, when I go to this address it immediately redirects me to this address, https://x.cs50....
0
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1answer
19 views

In Scratch “point towards mose pointer” works only when its open in editor

when I click on "see inside"(when editor is open) of the project then only above mentioned operation executes else the respective scratch remains standstill. What can I do to make it work on project ...
0
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1answer
44 views

Why can I not see the images in `pset0`? [closed]

Why can I not see the images on pset0? I am using Safari - is this the problem? I ended up just answering with option A for all of them.
0
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1answer
71 views

Scratch: Broadcasting of messages

Am completely new to programming and trying to experiment a bit with Scratch as part of week 0. So far lots of fun. But now I am facing a problem: Aim is to not get eaten by sharks. I have created ...
0
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1answer
458 views

Scratch won't play the background music and switch the backdrop in my game. Help pls :(

I have attached the snippet of an excerpt from my Scratch project, Shoot 'Em Zombies. It is basically a simple zombies shooting game. I want to set "Main" to be the background music and switch ...
0
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3answers
307 views

seeking ideas for problem set 0

i am not super creative, and I cannot think beyond the cat following the mouse, or chasing the bird for ideas on what kind of program to make for problem set 0. can someone just give me an idea to ...
0
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1answer
109 views

how to answer problem sets

I am an online student of CS50.This my first experience as an online student. I have no idea how to attempt the problem set. Am I supposed to write it in MS Word or in some other text editor? Should I ...
0
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1answer
664 views

Where to submit Problem set 0 assignments

So far i have attended week 0 and week 1 lectures online. For week 0 have created a game in [scratch] (http://scratch.mit.edu/) site. Currently i am doing week 1 or problem set 0 assignments. ...
0
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1answer
188 views

How to delete a variable in scratch

This may be a silly question but has wasted so much of my time. I mistakenly created a global variable which should be a local variable. How can I delete or change it to local variable.
0
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1answer
114 views

Can't move sprites in the Scratch project page

I made a game using Scratch, which you can see here. This game is working fine in the editor window but on the "Project" page when I click the cat sprite, it does not move! Another bug: Why are the ...
0
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2answers
217 views

How can I submit Pset0 if I have problems with the login?

I would like to submit pset0 but I cannot login; I receive the message that Email or password is incorrect. I think that the link I am using is good and I'm pretty much sure I'm typing everything ...