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Unit 3 Solutions And Assessments - Bjc.edc.org

Exercise 1: This page was written before COVID-19, which has changed everything, perhaps permanently. Even before the pandemic, there was a sharp division between intellectual workers, who can work anywhere, and service workers, who have to work on location.

Actived: Wednesday Jul 28, 2021

Detail: https://bjc.edc.org/June2020bjc2/bjc-r/cur/solutions-assessments/3-solutions-assessments.html

Unit 2 Lab 2: Making Lists, Page 1

(52 years ago) You've seen the ask and answer blocks on Unit 2 Lab 1 Page 2: Checking the Player's Guess. You've worked with multiple sprites on Unit 1 Lab 2 Page 2: Making Programs Talk. Write a script for the "Add Item" button sprite so that when that sprite is clicked, it will ask the user for a new item, and then put the user's answer in the grocery list.

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Unit 4 Lab 4: Network Protocols, Page 3

(52 years ago) These are all open standards, which means that anyone can look up their details and build them into new hardware and software without getting permission.(For example, here is the IPv4 specification, but don't read it now.) (Before the Internet, there were several different network protocols that were secrets belonging to particular manufacturers.

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The Beauty and Joy of Computing

(52 years ago) The Beauty and Joy of Computing by University of California, Berkeley and Education Development Center, Inc. is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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Unit 4 Lab 4 Teacher Guide - Education Development Center

(52 years ago) Lab 4: Data Representation and Compression. This lab addresses representation of digital data as binary sequences. The first two pages introduce bits, bytes, and binary sequences and how they are used to store text, images, and other data. The following two pages explain how a binary sequence can represent numbers—both integers and non ...

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2D Dictionaries in Python - Education Development Center

(52 years ago) Even more Dimensions... After reading the title to this page you might be a little afraid of what's to come. Don't be! Just how we can have lists inside of lists, we can also have dictionaries inside of dictionaries.

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Unit 6 Lab 2 Teacher Guide - Education Development Center

(52 years ago) Lab 2: History and Impact of Computers. At the start of this lab, students explore some highlights in the long history of computing from ancient times to today. Then, Moore's law is introduced in the context of recent exponentially-paced progress in the field of computers. The last page of the lab is intended to give your class a break from the ...

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Beauty and Joy of Computing: Snap ! Crash Course

(52 years ago) snap.berkeley.edu/run – Snap! programming environment (the most important link); Snap! Cheat Sheet – shows how each procedure on the AP CSP Exam Reference Sheet looks and is used in Snap!; Snap! Reference Manual – many more details about Snap! than this brief crash course; you can also access this by clicking the Snap! logo in the upper left corner of any Snap! window:

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Unit 4 Lab 4: Data Representation and Compression, Page 6

(52 years ago) DAT-1.D.4. Lossless compression works by removing redundant data. These algorithms can usually reduce the number of bits required to store or transmit the data while guaranteeing that the original data can be perfectly reconstructed. Run-length encoding is an example of lossless compression. Consider the 158 pixels in the top row of the BJC ...

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Unit 6 Self-Check Questions - Education Development Center

(52 years ago) Self-Check Question. This code is similar to a higher-order procedure that you have learned. Identify the procedure that this code imitates: You learned about for each in Unit 2 Lab 2: Checking Each Quiz Answer. You learned about keep in Unit 2 Lab 3: Keep ing Items from a List. You learned about map in Unit 3 Lab 2: Transforming Every List Item.

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Snap: Hour of Code - Education Development Center

(52 years ago) Next. Welcome to our Hour of Code! Please use us on Google Chrome.Google Chrome.

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Unit 5 Lab 3: Turning Data into Information, Page 4

(52 years ago) You can use the pipe function from the "Bar Charts" library to work through your data analysis one function at at time: The pipe function sends the data from table (cars) through keep to filter it for just the Subarus, through column (9) of table to get just the "City MPG" for those Subarus, and finally through average to get the average of those Subaru MPG values.

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Unit 4 Lab 2: Cybersecurity, Page 4

(52 years ago) Read "Encryption in the Hands of Terrorists, and Everyone Else" and "Why Not Regulate Encryption?" (Blown to Bits pages 161-165).Read "Cryptography Unsettled" (Blown to Bits pages 191- top of 193).Do the following debate activity on the issue of the availability of encryption software.

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Unit 4 Lab 4: Data Representation and Compression, Page 5

(52 years ago) First, find the largest power of two that is less than the number. Then, subtract that power of 2 from the number, keep the new number, and record a 1 in the place for that power of 2. There is Another Algorithm for Converting to Binary. (Change from a "comment" to a "sidenote" when page is complete.) - …

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Unit 5 Lab 5: Computing in War, Page 3 - bjc.edc.org

(52 years ago) 1.1 Contribute to society and human well-being. This principle concerning the quality of life of all people affirms an obligation to protect fundamental human rights and to respect the diversity of all cultures. An essential aim of computing professionals is to minimize negative consequences of computing systems, including threats to health and ...

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Unit 5 Lab 5: Computing in War, Page 1

(52 years ago) BH: I think 5.5 is the best lab in the whole curriculum! MF: I still have concerns about the only thing a POC invented in this course being a children's toy (that POC children are killed for playing with)

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Unit 5 Lab 1: Search Algorithms and Efficiency, Page 6

(52 years ago) A decision problem is a problem with a true/false answer (for example, "is 5,825,496,221 a prime number?").; An optimization problem is one with the goal of finding the best solution among many (for example, "what's the best school schedule to place every student into as many of …

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Unit 5 Lab 1: Search Algorithms and Efficiency, Page 8

(52 years ago) In parallel computing, the program is broken into smaller steps, some of which are performed at the same time. Modern computers have multiple processors (2, 4, or 8) in a single computer, so you can do small-scale parallel processing on the machine on your desk. CSN-2.A.4. You can compare the efficiency of two different algorithmic solutions to ...

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Unit 2 Lab 5: Copyrights, Page 1

(52 years ago) How could the artists (musicians, writers, producers, actors, and so on) support themselves? IOC-1.F.1. The copyright law makes it illegal for anyone to make copies of someone else's work (a book, a painting, a song, etc.) without the permission of the author. There are exceptions, as you'll learn later in this lab.

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Unit 2 Lab 4: Making Computers Do Math, Page 2

(52 years ago) In this project, you will create a library (a collection) of math tools that builds on the blocks you created in Lab 3 Page 2: Combining Predicates. AAP-3.D.1. A software library is a collection of procedures that can be used in programs. Using libraries simplifies the development of new programs. When you use procedures that you already know ...

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Unit 4 Lab 4: Cybersecurity, Page 3

(52 years ago) Caesar Cipher Project (Teacher's Choice) A Caesar cipher (or shift cipher) is a simple encryption method. Each letter in what's called plaintext (the un-encrypted text) shifts some fixed number of positions along the alphabet. After Z, the shifting "wraps around" and goes back to A. For example, “ABCZ123abcz” shifted by 4 would become ...

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Unit 1 Lab 6: Explosion of Bits; Games and Violence

(52 years ago) Write down three arguments for each of the following positions. Position A: The right to privacy isn't just an abstract principle. Sometimes, for example, women disappear to hide from abusive husbands. The police can't assume they are getting the whole story when a person is reported missing. They have to follow the rules even if that delays ...

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Unit 4 Lab 2: Cybersecurity, Page 5

(52 years ago) A firewall is a security system that controls the kinds of connections that can be made between a computer or network and the outside world. Phishing is a common security attack in which the victim is tricked into giving up personal information or downloading malware. Software has bugs (even published software written by professionals).

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Unit 4 Lab 3: Community and Online Interactions, Page 6

(52 years ago) The risks and challenges need attention, but we shouldn't completely neglect the benefits of computing, as it has inspired advances in a wide range of fields, including the arts, science, engineering, and communications. CRD-2.A.1 "creative expression" only, IOC-1.A.2, IOC-1.A.5 "arts" only; ("One purpose of the computing innovations")

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Unit 3 Lab 2: Contact List, Page 5

(52 years ago) Here is a quick review of the higher order functions map, keep, combine. Map performs a function on every item of a list and reports the list of changed items. Keep uses a predicate function (a true/false question) to check every item in a list and reports the items that make the predicate true. (You learned about keep on Unit 2 Lab 3 Page 5 ...

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Unit 1 Optional Projects, Page 3 Hint

(52 years ago) Hints For The Game of Pong. Examine the starter file where a rectangular paddle sprite and a circular ball sprite have been created for you. Write the code for the paddle first. The paddle should be allowed to move only up and down near the right edge of the screen. When the user presses the up/down arrow keys on the keyboard, the paddle should ...

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Unit 4 Lab 2: Cybersecurity, Page 2

(52 years ago) There are several ways you could solve this problem. Both of the following ways require higher order functions. (You can review the higher order functions map, keep, and combine on Unit 3 Lab 2 Page 5: Transforming Every List Item .) One way is to use the unicode block to select all the capital letters rather than splitting by word breaks.

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Unit 4 Lab 2: Cybersecurity, Page 3

(52 years ago) Public key cryptography is a mathematical technique to avoid the need to communicate a secret key from one person to another. Instead, each person has two keys: a private key known only to that person and a public key that everyone in the world is allowed to know. If Bob wants to send Alice a secret message, he encrypts it with Alice's public key.

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Unit 3 Lab 2: Sorting, Page 2 - bjc.edc.org

(52 years ago) Explore the selection sort before writing any code. With your class, stand up and form a line. Then, follow the selection sort process to put everyone in sorted order by month and day of birth (for example, 10/4).

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Unit 1 Optional Projects, Page 3

(52 years ago) The Game of Pong. In this project, you are going to model a computer game called Pong, first developed by Atari in 1972. You will write the code for the paddle which will allow it to move up and down based on user keyboard input and also write the code for the ball which will allow it to bounce every time it hits a wall or the paddle.

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