sides and two non-parallel sides. Area measures the size of a surface. Perimeter the distance around a close shape. Ratio is just a comparison between two different things. Variable a letter used to represent an unknown value. Fraction part of a whole. Numerator the part of the whole shaded. Denominator the total amount of parts. Decimal a number pertaining to tenths or to the hundreths and beyond. Equation a number sentence with an equal sign. Percent is a ratio that compares a number with one hundred. Proportion is a equation showing two equal ratios. Commutative Property the order does not change the sum or product. Rate is a ratio between two quantities for different units. Absolute Value is its distance away from the #0 on a number line. Volume is the space that a figure occupies. Associative Property the grouping will not change the sum or product. Intergers a whole positive or negative number. Computer a machine that stores and processes information. Analytical Engine a computer that punched codes onto a card. It was invented by Charles Babbage. Conditional Statement a program that allows a computer to select from a group of actions to perform. Z3 the first programable computer that wasn't tied to a specific function. Mark 1 a giant caculator the size of a room that could perform any number of equations. E.N.I.A.C electronic numeral intergrator and caculator. Integrated Circuits miniature electronic devices that store and hold transistors. Transistors the switches that control the flow of electricity in a computer. Microprocessor a silicon chip that holds thousands of transistors. Apple 2 the first popular home computer. Input the data that is entered into the computer. Output the computer generated information that is displayed to the user in some discernible from such as a screen display, printed page, or sound. Storage any device in which information or data is stored. Processing the manipulation of data by a miccroprocessor or embedded processor according to instructions given to it by a program or embedded in the chip itself. Electronic adjective for describing a device or result that is dependent on the action of electrons to work. Software the processor and data that make computer programs work. Hardware the physical parts of your computer that you can touch or feel such as the keyboard, monitor, and computer case. Microprocessor the main processing unit of a computer or into processing device the brains of the machine carrying out instructions performing calculations and interacting with the components used to operate the computer. RAM memory to store data and programs currently being processed. Auto erased when power off. Ram must be saved on desk or tape for future use. ROM stored permanet systems instructions which are never changed. It hold contents even when the power is turned off. Data is placed in ROM only once and stays there permanently ROM is generally installed by the manufacturer as part of the system. ]]>

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