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| Rotary waveguide switch having arcuate waveguides realized by planar faces |
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| Lubricant and motor fuel additives |
| I claim: 1. As a new composition, an oil-soluble boron-containing composition having a boron ... |
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| Organophilic clay gellants |
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| Intelligent automatic gain control circuit |
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| Microprocessor controlled AGC |
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| Circuit and method of suppressing inter-station radio tuning noise |
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| Monitoring system for optical transmission line repeaters |
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| Piezoelectric electroacoustic transducer |
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| Support arrangement for a flexible sound generating diaphragm |
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Random problem generator
| Details |
Inventors: De Almeida, Victor James;
Assignee: Fogcutter, LLC (Midland, TX)
Primary Examiner: Harrison; Jessica J.
Assistant Examiner: Nguyen; Binh-An
Attorney, Agent or Firm: Makay; Christopher L.
A random problem generator selects a formula from a database of formulas, randomly generates an initial condition necessary to solve the selected formula, and generates a question involving the selected formula and the randomly generated initial condition. A random problem generator further randomly selects a cation from a table of cations, retrieves the cation name from the table of cations, randomly selects an anion from a table of anions, and retrieves the anion name from the table of anions. The random problem generator balances the charges of the cation and the anion and determines the subscripts for the cation and the anion. The random problem generator places the cation and anion together to form a chemical formula and the cation name and anion name together to form a chemical name. The random problem generator additionally generates either a question supplying the chemical name and asking for the chemical formula or supplying the chemical formula and asking for the chemical name. |
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DETAILED DESCRIPTION In accordance with the present invention, a random problem generator selects a formula from a database of formulas, randomly generates an initial condition necessary to solve the selected formula, and generates a question involving the selected formula and the randomly generated initial condition.
The random problem generator displays or prints the question involving the selected formula and the randomly generated initial condition.
The random problem generator further generates an answer to the question involving the selected formula and the randomly generated initial condition and compares the answer input by a user to the generated answer.
When the user input answer is incorrect, the random problem generator displays the question completely solved.
A random problem generator randomly selects a cation from a table of cations, retrieves the cation name from the table of cations, randomly selects an anion from a table of anions, and retrieves the anion name from the table of anions.
The random problem generator balances the charges of the cation and the anion and determines the subscripts for the cation and the anion.
The random problem generator further places the cation and anion together to form a chemical formula and the cation name and anion name together to form a chemical name.
The random problem generator still further generates either a question supplying the chemical name and asking for the chemical formula or supplying the chemical formula and asking for the chemical name.
It is, therefore, an object of the present invention to provide a problem generator capable of generating vast numbers of unique, random problems.
Another object of the present invention is to provide a random problem generator that is storable on storage media, such as a hard drive or diskettes, and transferable from a central location over a network, such as the Internet, to personal computers or terminals.
A further object of the present invention is to provide a random problem generator that uses computer checks to virtually eliminate repetition of questions to students
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Telecommunications 
