A few days ago, the key research topic of educational technology in the 11th Five-Year Plan —— "Research on the application of handheld online learning system in subject teaching" made a major breakthrough: Noah successfully implanted "graphic computing" technology into a new generation of handheld learning platform, and the first handheld graphic calculator in China was officially born. 65438+February 18, Noah's learning machine "graphic computing" technology officially passed the appraisal of the Central Audio-visual Education Center of the Ministry of Education. The appraisal team, composed of educational technology experts and mathematics education experts from Central Audio-visual Education Center, People's Education Society, Peking University and Beijing Normal University, agreed that Noah Zhou successfully developed the function of "graphic calculator" on the new generation of handheld learning platform, which filled the technical gap of interactive graphic calculation of domestic handheld learning equipment, complied with the reform requirements of national new curriculum standards, was an ideal platform for inquiry learning, and had important popularization and application value in the reform of new curriculum standards and the promotion of inquiry mathematics teaching. According to the reporter's understanding, graphic calculator technology, as an advanced information teaching technology of mathematics inquiry learning, has become an indispensable information teaching tool for mathematics teaching and research. In some developed countries such as the United States, graphic calculators have been widely used and penetrated into every classroom teaching in primary and secondary schools. But at present, only Texas Instruments, Hewlett-Packard, Casio and other manufacturers in the world can produce it. With the deepening of the implementation of the new curriculum standards in China, mathematics teaching in primary and secondary schools in China has put forward higher and higher requirements for the use of information teaching tools such as graphic calculators. However, before the inquiry learning teaching of mathematics in China, the handheld graphic computing devices used were all provided by foreign enterprises, and the price of a single device was more than 2,000 yuan, which was expensive. Moreover, from the operating language and function settings to the user's interactive operating habits and high prices, there is a lack of localized processes, and complicated operations are difficult for teachers and students to master. The high procurement cost brings difficulties to some schools and students with poor economic conditions and tight education funds, brings great challenges to the information-based teaching of graphic computing, and restricts the in-depth development of mathematics inquiry teaching. Therefore, mathematics teaching in primary and secondary schools in China is still in the experimental stage. Nuoyazhou Education Holding Company successfully overcame the core technical difficulties of graphic computing, implanted the function of graphic calculator into the new generation of learning machine "Souxue.com", and enjoyed the basic hardware platform of learning machine with color screen, full Chinese interface and handwriting input, without additional hardware cost, which was simple to use and operate, which would greatly reduce the use threshold and create conditions for graphic calculator to enter primary and secondary schools. Noah's advanced graphic computing software integrates mathematical sketchpad, algebraic calculus, function programming, geometric dictionary and classic courseware. Combined with Noah's innovative multimedia interactive learning technology, large-screen handwriting, 260,000-color high-definition display, humanized operation interface, more friendly human-computer interaction and simpler operation. Combined with strong learning guidance, the lower the procurement cost, the greater the income. The person in charge of Noah's Week said: Noah's Week will continue to reduce costs through technological innovation, let graphic computing, an advanced information-based learning tool, enter every classroom, establish more "mobile mathematics laboratories", let more teachers and more students enjoy the advanced information-based educational technological achievements, promote the development of research-based learning teaching in China and help the new curriculum reform of mathematics education in China. Wang Xiaowu, deputy director of the Central Audio-visual Education Center, said that the new achievements are of great significance for guiding students to carry out inquiry-based dynamic learning, stimulating students' thinking in images, and effectively improving students' abilities of independent exploration and learning. About Graphic Calculator TI Graphic Calculator is a new mathematical tool, which can calculate and draw. It has symbolic algebra system, geometric operating system, data analysis system and so on. Can draw all kinds of graphics intuitively, dynamically demonstrate and track the trajectory. It also includes many classroom functions such as geometry, statistics and finance. With large-capacity Flash ROM, you can save multiple application software and upgrade the operating system in the machine through the network cable. TI graphic calculator can accomplish functions that ordinary calculators can't, such as solving equations, programming and drawing. The graphic calculator provided by TI Company for mathematics teaching in Chinese mainland is closely related to the curriculum reform outline, which mainly involves three chapters: algorithm, probability and statistics. The scores of the three chapters of college entrance examination are: algorithm 5, probability 15, statistics 5- 10, ***30 or so. But algorithm, probability and statistics are the most abstract and difficult chapters in middle school mathematics. TI graphic calculator makes these teaching contents intuitive, vivid and easy to understand through graphic transformation, and it is a good assistant for middle school math teachers! Main models of teachers' computers: TI-83plus, TI-84plus, voyage200, TI-89 Titanium, TI-nspire Historical Casio made the world's first graphic calculator fx-7000G in 1985. Soon HP also introduced HP-28C. HP 50g introduced in 2006 has Computer Algebra System (CAS), which is one of the most advanced varieties at present. Texas Instruments began to produce graphic calculators from 1990. The oldest model is TI-8 1, and then there are TI-82 series, TI-83 series, TI-84 Plus and so on. TI-89 and TI-92 have computer algebra system (CAS). In American and Canadian schools, many high school math teachers allow or even encourage their students to use graphic calculators in class. Even in some courses (such as calculus). However, in some courses, such as physics and chemistry, graphic calculators are forbidden because they can store the periodic table of elements.
scientific calculator
The difference between standard calculator and scientific calculator;
Standard type and scientific type. The standard model has enough keys for you to operate with your fingers, and the numbers are large and clear, which can meet your basic calculations. The standard model supports the display of 12 digits, which is enough to use finger keys, arithmetic operation, square root, percentage and memory functions. Scientific general functions are available, and all functions are distributed on the keyboard, which is consistent with the fact that you can use them without menu list. Scientific type supports 24-bit digital display, operation priority selection mode, decimal conversion function, standard mathematical function, percentage calculation, square root calculation, logarithm, power, memory and other functions.
How to open and use the scientific calculator in the computer;
There is a calculator in windows system, which can switch between simple calculator and scientific calculator. How to open the scientific calculator that comes with the computer: 1: Start-Program-Accessories-Calculator 2: Start-Run-Enter "calc" to open it. 3. Call the local program through the webpage to realize all the functions of the online calculator. Click "View" to open the program and switch between scientific and standard.
How to write a prescription with a calculator on the computer;
Open the calculator, select "scientific type" in the view, select decimal after input, input the number of required roots, and then click X Y. If y= 1/2, this is the method of finding roots. If y= 1/3, it is cubic; By analogy, y= 1/4 is the fourth power.
Main scientific calculators:
Casio (Casio)
Baidu Encyclopedia-# Sorry to find so much.