LAC 28:CXLII.709. Data Analysis and Measurement

A. Measure and estimate lengths in standard units. 1. Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes. 2. Measure the length of an object twice, using two different units of length or two different measurements. a. Describe how the two measurements relate to the size of the unit chosen with a written response. 3. Estimate lengths using units of inches, feet, centimeters, and meters to the nearest whole unit. 4. Measure to determine how much longer one object is than another, expressing the length difference in terms of the same standard-length unit. B. Relate addition and subtraction to length. 1. Use addition and subtraction up to 100 to solve one- and two-step real –world mathematical tasks involving lengths that are given in the same units by using drawings and equations with a symbol for the unknown number to represent the problem. 2. Create a number line diagram with equally spaced points corresponding to whole numbers, using 0 or another whole number as a starting point. a. Recognize that each mark on a number line represents one whole number and that each position corresponds to a single value. b. Represent whole numbers as lengths from 0. c. Represent whole-number sums and differences up to 100 on a number line diagram. C. Work with time and money. 1. Tell, write, and represent time from analog and digital clocks to the nearest five minutes using a.m. and p.m. a. Express portions of an hour using the fractional terms half an hour, half past, quarter of an hour, quarter after, and quarter till. 2. Solve real-world mathematical tasks involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately. D. Represent and interpret data. 1. Generate measurement data by either measuring the lengths of several objects to the nearest whole unit or by taking repeated measurements of the same object. a. Show the measurement data by either measuring the lengths of several objects to the nearest whole unit or by taking repeated measurements of the same object. 2. Draw a picture graph and a bar graph to represent a data set with up to four categories. a. Solve simple put-together, take-apart, and compare real-world mathematical tasks using information presented in a picture graph or bar graph.