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Site Title : The Beauty and Joy of Computing

Unit 2 Lab 3: Making Decisions, Page 2 - Education …

Link: https://bjc.edc.org/bjc-r/cur/programming/2-complexity/3-predicates/2-combining-predicates.html?course=bjc4nyc.html&novideo&noassignment

FREEThere are three Boolean functions in the Operators palette: AAP-2.F.5, AAP-2.F.1. Notice that both the blocks themselves and the input slots in the blocks are hexagonal. Boolean functions take Boolean values ( True or False) as inputs and report a new Boolean value as output. When you use Boolean functions in a program, though, the inputs will ... ... See Details

Unit 6 Lab 1 Teacher Guide - Education Development …

Link: https://bjc.edc.org/bjc-r/cur/teaching-guide/U6/lab-pages/1-computer-abstraction-hierarchy.html?topic=nyc_bjc%2F6-teaching-guide.topic&course=bjc4nyc_teacher.html&novideo&noassignment

FREEHardware Teardown. The ideal introduction to this unit is not mentioned in the student materials to leave teachers free to choose, but it's exciting and instructive for students in groups to take apart an actual (old) computer.Materials: Preferably, one computer per four students or so, but even just one computer with the whole class watching is still great. ... See Details

Unit 6 Lab 2: Data Representation and Compression, Page 1

Link: https://bjc.edc.org/March2019/bjc-r/cur/programming/6-computers/2-representation-compression/1-bits.html?topic=nyc_bjc%2F6-how-computers-work.topic

FREEAs you know, information travels over wires inside the computer, and because of the digital abstraction, each wire is either on or off, with no intermediate states allowed. This small piece of information is called a bit, the smallest possible unit of information in the digital domain.. What does the value of a bit mean?By convention, the two states of a bit are interpreted as 0 and 1, … ... See Details

Unit 4 Lab 4: Data Representation and Compression, Page 2

Link: https://bjc.edc.org/bjc-r/cur/programming/4-internet/4-representation-compression/2-sequences.html?topic=nyc_bjc%2F4-internet.topic&course=bjc4nyc.html&novideo&noassignment

FREEPrinted on paper as ones and zeros, the 16GB phone's memory would take nearly 40,000,000 pages. The information in storage—whether it is a text message, a photograph, a song, a computer program, or a list of phone numbers—all looks the same, like a sequence of bits that are either On or Off (one or zero), a binary sequence. ... See Details

Unit 3 Lab 5 Teacher Guide - Education Development …

Link: https://bjc.edc.org/bjc-r/cur/teaching-guide/U3/lab-pages/5-work.html?topic=nyc_bjc%2F3-teaching-guide.topic&course=bjc4nyc_teacher.html&novideo&noassignment

FREEThe 3 lab pages could be split across 2–4 days (70–140 minutes).Expected times to complete follow: 10–20 minutes (<1 class period) on Past and Future; 30–60 minutes (about 1 class period) on Working Conditions; 30–60 minutes (about 1 class period) on Working Remotely ... See Details

Unit 4 Lab 4 Teacher Guide - Education Development …

Link: https://bjc.edc.org/bjc-r/cur/teaching-guide/U4/lab-pages/4-data-representation.html?topic=nyc_bjc%2F4-teaching-guide.topic&course=bjc4nyc_teacher.html&novideo&noassignment

FREEThe 6 lab pages could be split across 4–7 days ( 150–300 minutes ). Expected times to complete follow: 30–60 minutes (about 1 class period) on Bits. 30–60 minutes (about 1 class period) on Binary Sequences. 15–30 minutes (<1 class period) on Representing Whole Numbers. 20–40 minutes (<1 class period) on Floating Point. ... See Details

Unit 4 Lab 4: Data Representation and Compression, Page 1

Link: https://bjc.edc.org/bjc-r/cur/programming/4-internet/4-representation-compression/1-bits.html?topic=nyc_bjc%2F4-internet.topic&course=bjc4nyc.html&novideo&noassignment

FREEIn this lab, you will explore how different kinds of information are represented in a computer. On this page, you will learn about bits, the basic units of data in computing. : Bit. DAT-1.A.3. A bit is a single unit of data that can only have one of two values. We usually represent the two values as 0 (off) and 1 (on). ... See Details

Unit 6 Lab 1: Computer Abstraction Hierarchy, Page 6

Link: https://bjc.edc.org/bjc-r/cur/programming/6-computers/1-abstraction/06-digital-architecture.html?topic=nyc_bjc%2F6-how-computers-work.topic&course=bjc4nyc.html&novideo&noassignment

FREEComputer designers can work as if circuits were either off (0) or on (1) because of the digital abstraction, the most important abstraction in hardware. Above that level of abstraction, there are four more detailed levels, called the digital domain. Below the digital abstraction, designers work in the analog domain, in which a wire in a circuit ... ... See Details

Unit 6 Lab 1: Computer Abstraction Hierarchy, Page 10

Link: https://bjc.edc.org/March2019/bjc-r/cur/programming/6-computers/1-abstraction/10-analog.html?topic=nyc_bjc%2F6-how-computers-work.topic&course=bjc4nyc.html&novideo&noassignment

FREEThe on-or-off picture of a wire, a transistor, or a logic gate output is a simplification—an abstraction. This is a rough graph of the actual input-output behavior of a transistor. Don't worry about the details; just notice the two blue flat parts of the graph. ... See Details

Unit 6 Lab 1: Computer Abstraction Hierarchy, Page 1

Link: https://bjc.edc.org/bjc-r/cur/programming/6-computers/1-abstraction/01-abstraction.html?topic=nyc_bjc%2F6-how-computers-work.topic&course=bjc4nyc.html&novideo&noassignment

FREELike the Internet, the way a computer works on the inside also has levels of abstraction. In this lab, you will learn about the levels of abstraction in computer software and hardware. On this page, you will learn get an overview of three groups ( domains) of levels of abstraction. There are a lot of levels of abstraction in how computers work. ... See Details

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