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57-629: Georgia law, as amended by the A+ Education Reform Act of 2000, requires that all students from first to eighth grade take the CRCT in the content areas of reading, English/language arts, and mathematics. Students in grades three through eight are also assessed in science and social studies. The CRCT only assesses the content standards outlined in the Common Core Georgia Performance Standards which

114-509: A compiler written for the language. ( Assembly language programs are translated using an assembler .) The resulting file is called an executable . Alternatively, source code may execute within an interpreter written for the language. If the executable is requested for execution, then the operating system loads it into memory and starts a process . The central processing unit will soon switch to this process so it can fetch, decode, and then execute each machine instruction. If

171-462: A list of integers could be called integer_list . In object-oriented jargon, abstract datatypes are called classes . However, a class is only a definition; no memory is allocated. When memory is allocated to a class and bound to an identifier , it is called an object . Object-oriented imperative languages developed by combining the need for classes and the need for safe functional programming . A function, in an object-oriented language,

228-422: A programming language . Programming language features exist to provide building blocks to be combined to express programming ideals. Ideally, a programming language should: The programming style of a programming language to provide these building blocks may be categorized into programming paradigms . For example, different paradigms may differentiate: Each of these programming styles has contributed to

285-428: A store which consisted of memory to hold 1,000 numbers of 50 decimal digits each. Numbers from the store were transferred to the mill for processing. The engine was programmed using two sets of perforated cards. One set directed the operation and the other set inputted the variables. However, the thousands of cogged wheels and gears never fully worked together. Ada Lovelace worked for Charles Babbage to create

342-620: A description of the Analytical Engine (1843). The description contained Note G which completely detailed a method for calculating Bernoulli numbers using the Analytical Engine. This note is recognized by some historians as the world's first computer program . In 1936, Alan Turing introduced the Universal Turing machine , a theoretical device that can model every computation. It is a finite-state machine that has an infinitely long read/write tape. The machine can move

399-584: A language's basic syntax . The syntax of the language BASIC (1964) was intentionally limited to make the language easy to learn. For example, variables are not declared before being used. Also, variables are automatically initialized to zero. Here is an example computer program, in Basic, to average a list of numbers: Once the mechanics of basic computer programming are learned, more sophisticated and powerful languages are available to build large computer systems. Improvements in software development are

456-431: A measure called a Lexile to match readers with reading resources such as books and articles. Readers and texts are assigned a Lexile score, where lower scores reflect easier readability for texts and lower reading ability for readers. Lexile scores are assigned based on individual words and sentence length, rather than qualitative analysis of the content. Thus, Lexile scores do not reflect multiple levels of textual meaning or

513-538: A measurement system for reading and writing. The measurement ideas embedded in the Lexile framework can be found in two 1982–83 articles by Stenner and Smith. In Mesmer's Tools for Matching Readers to Texts: Research Based Practices , a 2006 study by Walpole et al. is described, in which 47 second-graders were assigned texts based on their Lexile scores. The study found that the students could read texts at their assigned Lexile scores (93%), but also noted that 43% of

570-817: A piece of text based on the text's vocabulary and syntax. According to MetaMetrics, text measures are evaluated through the "Lexile Analyzer", a computer program that assigns a score based on vocabulary and syntax. MetaMetrics states that over 150 publishers, including Capstone Publishers , Discovery Ed , Houghton Mifflin Harcourt , McGraw-Hill , Pearson PLC , Riverside Publishing , Scholastic Corporation , Simon & Schuster , Workman Publishing Company , and World Book , offer certified Lexile text measures for their materials. According to MetaMetrics, Lexile text measures can assist in selecting appropriately challenging materials for readers. Some books receive Lexile codes—two-letter designations that appear before

627-521: A profound influence on programming language design. Emerging from a committee of European and American programming language experts, it used standard mathematical notation and had a readable, structured design. Algol was first to define its syntax using the Backus–Naur form . This led to syntax-directed compilers. It added features like: Algol's direct descendants include Pascal , Modula-2 , Ada , Delphi and Oberon on one branch. On another branch

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684-572: A result, the computer could be programmed quickly and perform calculations at very fast speeds. Presper Eckert and John Mauchly built the ENIAC. The two engineers introduced the stored-program concept in a three-page memo dated February 1944. Later, in September 1944, John von Neumann began working on the ENIAC project. On June 30, 1945, von Neumann published the First Draft of a Report on

741-407: A writing component. Students received a report during the summer that tells them their scale score and their accuracy for all of the sections assessed on the CRCT. The scale score was used to determine if the student exceeds, meets, or does not meet state standards. If the student scores above an 850, he/she is considered to be exceeding the standards in that subject area. If the student's scale score

798-481: Is a sequence or set of instructions in a programming language for a computer to execute . It is one component of software , which also includes documentation and other intangible components. A computer program in its human-readable form is called source code . Source code needs another computer program to execute because computers can only execute their native machine instructions . Therefore, source code may be translated to machine instructions using

855-418: Is assigned to a class. An assigned function is then referred to as a method , member function , or operation . Object-oriented programming is executing operations on objects . Object-oriented languages support a syntax to model subset/superset relationships. In set theory , an element of a subset inherits all the attributes contained in the superset. For example, a student is a person. Therefore,

912-506: Is between 800-849 (inclusive), he/she is considered to be meeting the standards in that subject area. The state considers scores below 800 as not meeting standards. Students could have also determine their accuracy on any part of the test because their score reports show the number of questions they got right and the number of total questions that were administered. The highest score varies between subjects, but ranges from 850 to 980. In July 2011, an investigation uncovered that 178 teachers from

969-464: Is made up of Lexile reader measures and Lexile text measures, both of which are put on the Lexile scale. The Lexile scale runs from BR300 (Lexile) to above 2000L, though there is not an explicit bottom or top to the scale. Scores 0L and below are reported as BR (Beginning Reader). These books or students may be coded as Lexile: BR. In some cases, a student will receive a BR code followed by a number (e.g. Lexile: BR150L). A measure of BR150L indicates that

1026-585: Is the curriculum that Georgia teachers are required to teach. The CRCT was implemented in spring 2000. That year, summative, end-of-year assessments in reading, English/language arts, and mathematics were administered in grades four, six, and eight. Assessments in science and social studies (grades three through eight) were administered for the first time in spring 2002. Additionally, assessments in reading, English/language arts, and mathematics were administered in grades one, two, three, five, and seven in spring 2002. Students in grades 3, 5, and 8 were required to pass

1083-553: Is to alter the electrical resistivity and conductivity of a semiconductor junction . First, naturally occurring silicate minerals are converted into polysilicon rods using the Siemens process . The Czochralski process then converts the rods into a monocrystalline silicon , boule crystal . The crystal is then thinly sliced to form a wafer substrate . The planar process of photolithography then integrates unipolar transistors, capacitors , diodes , and resistors onto

1140-624: The IBM System/360 (1964) had a CPU made from circuit boards containing discrete components on ceramic substrates . The Intel 4004 (1971) was a 4- bit microprocessor designed to run the Busicom calculator. Five months after its release, Intel released the Intel 8008 , an 8-bit microprocessor. Bill Pentz led a team at Sacramento State to build the first microcomputer using the Intel 8008:

1197-485: The Sac State 8008 (1972). Its purpose was to store patient medical records. The computer supported a disk operating system to run a Memorex , 3- megabyte , hard disk drive . It had a color display and keyboard that was packaged in a single console. The disk operating system was programmed using IBM's Basic Assembly Language (BAL) . The medical records application was programmed using a BASIC interpreter. However,

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1254-550: The circuits . At its core, it was a series of Pascalines wired together. Its 40 units weighed 30 tons, occupied 1,800 square feet (167 m ), and consumed $ 650 per hour ( in 1940s currency ) in electricity when idle. It had 20 base-10 accumulators . Programming the ENIAC took up to two months. Three function tables were on wheels and needed to be rolled to fixed function panels. Function tables were connected to function panels by plugging heavy black cables into plugboards . Each function table had 728 rotating knobs. Programming

1311-404: The programming environment to advance from a computer terminal (until the 1990s) to a graphical user interface (GUI) computer. Computer terminals limited programmers to a single shell running in a command-line environment . During the 1970s, full-screen source code editing became possible through a text-based user interface . Regardless of the technology available, the goal is to program in

1368-475: The Atlanta area had been found to be cheating from as early as 2001 by falsifying test results. Aside from the teachers, 38 principals were linked to the scandal either by directly participating in the changing of wrong answers or allowing the changes to be made when they knew, or had the responsibility to know, what was going on. Lexile The Lexile Framework for Reading is an educational tool that uses

1425-534: The CRCT to be promoted to the next grade. The state also included Lexile measures with scores for students in grades 3-8. A Lexile measure can be used to match readers with targeted text and monitor growth in reading ability. The CRCT was last used in the 2013-2014 school year. It was replaced by the Georgia Milestones Assessment System, which contains thought-provoking questions, norm-referenced items, online administration, and

1482-502: The EDVAC , which equated the structures of the computer with the structures of the human brain. The design became known as the von Neumann architecture . The architecture was simultaneously deployed in the constructions of the EDVAC and EDSAC computers in 1949. The IBM System/360 (1964) was a family of computers, each having the same instruction set architecture . The Model 20 was

1539-433: The ENIAC also involved setting some of the 3,000 switches. Debugging a program took a week. It ran from 1947 until 1955 at Aberdeen Proving Ground , calculating hydrogen bomb parameters, predicting weather patterns, and producing firing tables to aim artillery guns. Instead of plugging in cords and turning switches, a stored-program computer loads its instructions into memory just like it loads its data into memory. As

1596-567: The Lexile Framework was potentially harmful in limiting students' reading choices and that the resources spent on it might be better spent on books. In a paper titled "Interpreting Lexiles in Online Contexts and with Informational Texts", Elfrieda H. Hiebert concluded that the variability of Lexile scores within the same text can be extensive and that slight changes in punctuation can result in "significant reclassification" on

1653-431: The Lexile measure is 150 units below 0L. A Lexile measure is defined as "the numeric representation of an individual's reading ability or a text's readability (or difficulty), followed by an 'L' (Lexile)". There are two types of Lexile measures: Lexile reader measures and Lexile text measures. Reader measures are assigned to individuals based on their reading comprehension for a piece of text. Text measures are assigned to

1710-488: The Lexile measure—to provide additional context about developmental appropriateness, reading difficulty, and intended use. BR is the only code that applies to both readers and text. The Lexile framework was created in 1989 by MetaMetrics. From 1984 to 1996, MetaMetrics received funding through five grants from Small Business Innovation Research , obtained through the National Institutes of Health , to develop

1767-587: The Lexile scale. U.S. Common Core State Standards for English Language Arts states that Lexile scores can be used to help determine text complexity levels for students. The standards also note that quantitative methods like Lexile may underestimate the challenges of complex narrative fiction and that qualitative measures should be prioritized for students in grade 6 and above. More examples are available here . Lexile measures are reported by various reading assessments and programs. Source: State assessments Computer program A computer program

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1824-640: The cheaper Intel 8088 . IBM embraced the Intel 8088 when they entered the personal computer market (1981). As consumer demand for personal computers increased, so did Intel's microprocessor development. The succession of development is known as the x86 series . The x86 assembly language is a family of backward-compatible machine instructions . Machine instructions created in earlier microprocessors were retained throughout microprocessor upgrades. This enabled consumers to purchase new computers without having to purchase new application software . The major categories of instructions are: VLSI circuits enabled

1881-419: The computer was an evolutionary dead-end because it was extremely expensive. Also, it was built at a public university lab for a specific purpose. Nonetheless, the project contributed to the development of the Intel 8080 (1974) instruction set . In 1978, the modern software development environment began when Intel upgraded the Intel 8080 to the Intel 8086 . Intel simplified the Intel 8086 to manufacture

1938-549: The configuration, an execute button was pressed. This process was then repeated. Computer programs also were automatically inputted via paper tape , punched cards or magnetic-tape . After the medium was loaded, the starting address was set via switches, and the execute button was pressed. A major milestone in software development was the invention of the Very Large Scale Integration (VLSI) circuit (1964). Following World War II , tube-based technology

1995-434: The descendants include C , C++ and Java . BASIC (1964) stands for "Beginner's All-Purpose Symbolic Instruction Code". It was developed at Dartmouth College for all of their students to learn. If a student did not go on to a more powerful language, the student would still remember Basic. A Basic interpreter was installed in the microcomputers manufactured in the late 1970s. As the microcomputer industry grew, so did

2052-460: The first Fortran standard in 1966. In 1978, Fortran 77 became the standard until 1991. Fortran 90 supports: COBOL (1959) stands for "COmmon Business Oriented Language". Fortran manipulated symbols. It was soon realized that symbols did not need to be numbers, so strings were introduced. The US Department of Defense influenced COBOL's development, with Grace Hopper being a major contributor. The statements were English-like and verbose. The goal

2109-479: The language BCPL was replaced with B , and AT&T Bell Labs called the next version "C". Its purpose was to write the UNIX operating system . C is a relatively small language, making it easy to write compilers. Its growth mirrored the hardware growth in the 1980s. Its growth also was because it has the facilities of assembly language , but uses a high-level syntax . It added advanced features like: C allows

2166-400: The language. Basic pioneered the interactive session . It offered operating system commands within its environment: However, the Basic syntax was too simple for large programs. Recent dialects added structure and object-oriented extensions. Microsoft's Visual Basic is still widely used and produces a graphical user interface . C programming language (1973) got its name because

2223-485: The matrix was to burn out the unneeded connections. There were so many connections, firmware programmers wrote a computer program on another chip to oversee the burning. The technology became known as Programmable ROM . In 1971, Intel installed the computer program onto the chip and named it the Intel 4004 microprocessor . The terms microprocessor and central processing unit (CPU) are now used interchangeably. However, CPUs predate microprocessors. For example,

2280-484: The maturity of the content. The United States Common Core State Standards recommend the use of alternative, qualitative methods to select books for grade 6 and above. In the U.S., Lexile measures are reported annually from reading programs and assessments. According to LightSail Education, about half of U.S. students in grades 3-12 receive a Lexile measure each year. The Georgia Department of Education provides resources for using Lexile measures. The Lexile Framework

2337-426: The omission of factors such as reader motivation, interest, and knowledge. The review affirmed the value of sentence length and word frequency as measures of complexity but also stated that these metrics are an estimated correlate of readability. The NCES concluded that while other work on text metrics may be more useful, Lexile scores are easier to analyze. In 2001, Stephen Krashen published an article arguing that

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2394-443: The programmer to control which region of memory data is to be stored. Global variables and static variables require the fewest clock cycles to store. The stack is automatically used for the standard variable declarations . Heap memory is returned to a pointer variable from the malloc() function. In the 1970s, software engineers needed language support to break large projects down into modules . One obvious feature

2451-494: The result of improvements in computer hardware . At each stage in hardware's history, the task of computer programming changed dramatically. In 1837, Jacquard's loom inspired Charles Babbage to attempt to build the Analytical Engine . The names of the components of the calculating device were borrowed from the textile industry. In the textile industry, yarn was brought from the store to be milled. The device had

2508-525: The sampled books were below a basic standard for 2nd grade. Mesmer concludes that "Lexile scores and book levels may not help teachers in finding books that can be read fluently" and lists the cost of using the Lexile inventory tools as a disadvantage. In 2001, the National Center for Educational Statistics (NCES) published a review of Lexile measures, concluding that the framework is an improvement over traditional reading measures, while also noting

2565-438: The set of students is a subset of the set of persons. As a result, students inherit all the attributes common to all persons. Additionally, students have unique attributes that other people do not have. Object-oriented languages model subset/superset relationships using inheritance . Object-oriented programming became the dominant language paradigm by the late 1990s. C++ (1985) was originally called "C with Classes". It

2622-467: The smallest and least expensive. Customers could upgrade and retain the same application software . The Model 195 was the most premium. Each System/360 model featured multiprogramming —having multiple processes in memory at once. When one process was waiting for input/output , another could compute. IBM planned for each model to be programmed using PL/1 . A committee was formed that included COBOL , Fortran and ALGOL programmers. The purpose

2679-418: The source code is requested for execution, then the operating system loads the corresponding interpreter into memory and starts a process. The interpreter then loads the source code into memory to translate and execute each statement . Running the source code is slower than running an executable . Moreover, the interpreter must be installed on the computer. The "Hello, World!" program is used to illustrate

2736-430: The synthesis of different programming languages . A programming language is a set of keywords , symbols , identifiers , and rules by which programmers can communicate instructions to the computer. They follow a set of rules called a syntax . Programming languages get their basis from formal languages . The purpose of defining a solution in terms of its formal language is to generate an algorithm to solve

2793-447: The tape back and forth, changing its contents as it performs an algorithm . The machine starts in the initial state, goes through a sequence of steps, and halts when it encounters the halt state. All present-day computers are Turing complete . The Electronic Numerical Integrator And Computer (ENIAC) was built between July 1943 and Fall 1945. It was a Turing complete , general-purpose computer that used 17,468 vacuum tubes to create

2850-561: The underlining problem. An algorithm is a sequence of simple instructions that solve a problem. The evolution of programming languages began when the EDSAC (1949) used the first stored computer program in its von Neumann architecture . Programming the EDSAC was in the first generation of programming language . Imperative languages specify a sequential algorithm using declarations , expressions , and statements : FORTRAN (1958)

2907-448: The wafer to build a matrix of metal–oxide–semiconductor (MOS) transistors. The MOS transistor is the primary component in integrated circuit chips . Originally, integrated circuit chips had their function set during manufacturing. During the 1960s, controlling the electrical flow migrated to programming a matrix of read-only memory (ROM). The matrix resembled a two-dimensional array of fuses. The process to embed instructions onto

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2964-478: Was designed to expand C's capabilities by adding the object-oriented facilities of the language Simula . An object-oriented module is composed of two files. The definitions file is called the header file . Here is a C++ header file for the GRADE class in a simple school application: A constructor operation is a function with the same name as the class name. It is executed when the calling operation executes

3021-436: Was replaced with point-contact transistors (1947) and bipolar junction transistors (late 1950s) mounted on a circuit board . During the 1960s , the aerospace industry replaced the circuit board with an integrated circuit chip . Robert Noyce , co-founder of Fairchild Semiconductor (1957) and Intel (1968), achieved a technological improvement to refine the production of field-effect transistors (1963). The goal

3078-405: Was to decompose large projects physically into separate files . A less obvious feature was to decompose large projects logically into abstract data types . At the time, languages supported concrete (scalar) datatypes like integer numbers, floating-point numbers, and strings of characters . Abstract datatypes are structures of concrete datatypes, with a new name assigned. For example,

3135-433: Was to design a language so managers could read the programs. However, the lack of structured statements hindered this goal. COBOL's development was tightly controlled, so dialects did not emerge to require ANSI standards. As a consequence, it was not changed for 15 years until 1974. The 1990s version did make consequential changes, like object-oriented programming . ALGOL (1960) stands for "ALGOrithmic Language". It had

3192-425: Was to develop a language that was comprehensive, easy to use, extendible, and would replace Cobol and Fortran. The result was a large and complex language that took a long time to compile . Computers manufactured until the 1970s had front-panel switches for manual programming. The computer program was written on paper for reference. An instruction was represented by a configuration of on/off settings. After setting

3249-423: Was unveiled as "The IBM Mathematical FORmula TRANslating system". It was designed for scientific calculations, without string handling facilities. Along with declarations , expressions , and statements , it supported: It succeeded because: However, non-IBM vendors also wrote Fortran compilers, but with a syntax that would likely fail IBM's compiler. The American National Standards Institute (ANSI) developed

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