Rounding with Mixed Decimals Essay Example | Topics and Well Written Essays - 1000 words - 1

Rounding with Mixed Decimals - Essay Example Adding extra zeros to the right of the last decimal digit does not change the value of the decimal number (Math League, 2008, pg. 1). Children should also be familiar with the whole number portion and with naming what digit is in what place. For instance, in 14.65, the whole number portion is 14. An example of the latter can be illustrated with 4.165. In this number, 4 is in the ones place, 1 is in the tenths place, 6 is in the hundredths place, and 5 is in the thousandths place (Math League, 2008, pg. 2). A variety of specific examples or tasks can be used to check student understanding of rounding with decimals to the nearest tenth and to detect the existence of any possible conceptual and/or procedural errors. First of all, if the assignments are being conducted via paper and pencil, traditional assessment instruments such as the paper test can be used to measure success or detect weak areas. Second of all, if the assignments are being conducted via computer software drills, the software often gives immediate feedback that can be used to detect any strengths and weaknesses that students may have. Third, if the assignments are being conducted via flash cards, immediate feedback can be gained and recorded by quickly jotting the notes regarding the students performance in a notebook for later analysis and recommendations or guidance in the area (Reys, et.al., 2004). According to 321 Know (2008, pg. 2), â€Å"Rounding decimals is very similar to rounding other numbers. If the hundredths and thousandths places of a decimal is forty-nine or less, they are dropped and the tenths place does not change. For example, rounding 0.843 to the nearest tenth would give 0.8. If the hundredths and thousandths places are fifty or more, the tenths place is increased by one. The decimal 0.866 rounded to the nearest tenth is 0.9.† According to Math League (2008), the general rule for rounding decimal numbers must be

Wireless Essay Example | Topics and Well Written Essays - 250 words

Wireless - Essay Example Each device on the network must also have a wireless network card in order to receive the wireless signal. The network layer manages the communication from the Ethernet hub. The transport layer keeps the traffic flowing while the session layer keeps traffic moving between computers granted access within the network, such as the desktop computer and a file or a mail server. The application layer is where data visibly moves as characters or entire files between computers.1 The greatest danger is interference from other radio frequencies such as radio-controlled toys.2 The second danger is unauthorized access by other wireless devices. AT&T, for instance, provides firewall software that blocks access, sometimes to needed sites. Certain backup programs are prevented from functioning by the firewall. Encryption is used by most providers to protect their own users. Although, sites like Brookhaven National Laboratories’ policy3 requires that all users register with BNL digitally but that BNL will not encrypt (or protect) the data of guest users. It is a strong policy that protects registered users while granting reasonable limited access to