Pierce College Lists Make Programming Question

instructions attached

Unit 5 Lesson 4
Name(s)_______________________________________________ Period ______ Date ___________________
Activity Guide – Lists Make
Step 1 – Try the app
● Add several reminders to the app.
● Scroll through your reminders.
Discuss with a Partner
● What programming patterns with lists do you think
you’ll need to use?
Step 2 – Plan
Lists: ​This app uses one list. Give it a name! What does it store?
List Name
What the List Stores
Other Variable:​ This app uses one extra variable in addition to the list. What does it store?
Variable Name
What the Variable Stores
index
Conditionals: ​Review the List Scrolling Pattern. Consider how you will use this in your app.
How does it work?
Many App Lab projects run in the following
way.
1. The user is interested in seeing items
in a list, like a list of favorite foods, or a
list of reminders.
2. The app shows the user one item in
the list at a time.
3. By clicking buttons (or otherwise
interacting with the app) the user can
move back and forth through the list,
one item at a time, to see every item.
This pattern allows a user to “scroll” through all
the items in the list. In order to make it work,
create an index variable and a list. Then use
the “Counter Pattern with Boundary” pattern to
create event handlers to change the value of
the index.
This pattern makes sense to use with the
updateScreen​ pattern since you will need at
least two buttons for scrolling left and right
through the list but afterwards will use the
same code to update the screen.
Computer Science Principles
1
Unit 5 Lesson 4
Function: ​What code may be repeated in your app? What should be included in your function(s)?
● Hint: Check out how the updateScreen() function is set up in the List Scrolling Pattern.
Inputs: ​What are the inputs for the app? These will all be turned into onEvents.
Input
Action
Result
“rightButton”
click
The reminder stored in the list at the next index is displayed.
Step 3 – Write Your Code
● Write the code for the app, using your plan above and the comments provided in Code Studio to help
● Step You Can Follow
○ Create all the variables (including the list!) from your tables above.
○ Give your variables a starting value using the assignment operator (=).
○ Create a function that updates the screen.
○ Update the output elements on the screen inside of the function.
○ Create event handlers (onEvent) for the inputs in your table above
○ Inside the event handlers, update the appropriate variable using the List Scrolling Pattern. Then call
the update screen function.
○ Use your debugging skills to identify unexpected behavior and fix your program
○ Comment your code as you go, explaining what each event handler and function does
● Extension Ideas
○ Create a button that deletes unwanted items from the list.
○ Change the list scrolling so that it wraps from the end of the list back to the beginning.
Computer Science Principles
2
Unit 5 Lesson 4
Step 4 – Submit
Before your submit check the rubric below to make sure your program
Category
Extensive Evidence
Input
onEvents are
created for all the
required inputs.
Storage: Variables
and Lists
Limited Evidence
No Evidence
onEvents are
created for most of
the inputs.
onEvents are
created for some of
the inputs.
onEvents are not
created for any
inputs.
Variables and lists
are created and
appropriately used
for all pieces of
information used in
the app.
Variables and lists
are created and
appropriately used
for most pieces of
information used in
the app.
Some information is
stored in variables
and lists and
appropriately
updated throughout
the app.
There are no
variables or lists
which store the
necessary
information for the
app to work
correctly.
Processing: Lists
The program
correctly processes
the list for all user
interface elements.
The program
correctly processes
the list for most user
interface elements.
The program
correctly processes
the list for some of
the user interface
elements.
The program does
not include or does
not process a list.
Code: Functions
A function is used
which correctly
updates all output
elements. The
function is called in
the appropriate
onEvents.
A function is used
which correctly
updates most of the
output elements. The
function is called in
the appropriate
onEvents.
A function is used
which updates some
of the output
elements or the
function is only
called in some of the
appropriate
onEvents.
There is no function
which updates the
screen.
Output
The screen correctly
displays the current
reminders in all
instances.
The screen correctly
displays the current
reminders in most
instances.
The screen correctly
displays some but
not all information.
The screen does not
correctly display any
stored information.
Code runs without
errors.
No errors are
present in the
required code.
One or two errors
are present in the
required code.
Three or four errors
are present in the
required code.
More than four errors
are present in the
required code.
Coding Comments
Comments are used
to correctly explain
the purpose and
function of all
onEvents and
functions.
Comments are used
to explain the
purpose and function
of most onEvents
and functions.
Comments are used
to explain the
purpose and function
of some onEvents
and functions.
Comments are not
present.
Computer Science Principles
Convincing
Evidence
3
4. Lesson 4: Lists Make (40 minutes estimate)
• Practice making an app that uses lists and programming patterns with lists
3. Create the Reminder App in Lesson 4 of Unit 5 using this activity_guide v.
4. Check the rubric in the activity guide (and below) to make sure all is completed.
5. Take a screenshot of your finished program and insert into your 9.2Lists document.
6. Take a screenshot of your code in the text view (click the Show Text button in the top right) and insert
into your 9.2 Lists document.
7. Record your working app, using a program that allows you to share your presentation with your teacher
through a link, such as Screencastify, Screencast-o-matic, etc, to record your computer screen.
o A video recording of your working app is part of your official Create PT.
o Follow the requirements for the video recording located on page 193 I of the AP Computer
Science Principles Course and Exam Description (CED) .
o You will not upload the video to this dropbox.
o Do NOT post your schoolwork to a public forum like YouTube, please.
o Add the link to your shared presentation to your 9.2Lists document.
8. Add the activity guide and your screenshot into one document.
9. Save/download/export your 9.2Lists document as a pdf.
.0. Submit your pdf to this assignment dropbox.
Your Activity 9.2 will be graded according to the following:
Rubric – 21 points
Limited Evidence
No Evidence
Category
Extensive Evidence
3 pts
Convincing Evidence
2 pts
1 pt
Opt
on Events are created for
onEvents are defined for on Events are created for
onEvents are not created
Input
all the required inputs
most of the inputs
some of the inputs
for any inputs
Variables and lists are
Storage: Variables and
Variables and lists are
created and appropriately
used for all pieces of
information used in the
created and
Some information is stored There are no variables or
appropriately used for in variables and lists and lists which store the
most pieces of appropriately updated necessary information fo
information used in the throughout the app the app to work correctly
Lists
app
app
The program correctly
The program correctly
The program correctly
processes the list for
processes the list for some
The program does not
include or does not
Processing: Lists
processes the list for all
most user interface
of the user interface
user interface elements
process a list
elements
elements
A function is used which A function is used which
A function is used which
correctly updates most updates some of the
correctly updaiwan
There is no function