Young Scientist , Vol. 9, pp. V. Algebra Use the distributive property in arithmetic computations. Use variables to describe arithmetic processes, to generalize arithmetic statements, and to generalize a problem situation. Measurement Determine perimeters, areas, and volumes of common polygons, circles, and solids using counting techniques or formulas. Convert, compare, and compute with common units of measure within the same measurement system.
Measure angles with a protractor.
Estimation and mental computation Apply appropriate strategies to find estimates of sums, differences, products, and quotients of whole numbers and determine whether the estimate is greater than or less than the exact result. Data analysis and probability Collect data, create a table, picture graph, bar graph, circle graph, or line graph and use them to solve application problems. Read, interpret, and use tables, charts, maps, and graphs to identify patterns, note trends, and draw conclusions. Look North America . Look up World .