Use the distributive property in arithmetic computations. Explain and reflect differences between calculators with arithmetic logic and calculators with algebraic logic when symbolizing a keying sequence and identifying the display as each key is pressed. Use variables to describe arithmetic processes, to generalize arithmetic statements, and to generalize a problem situation. 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.
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. Apply the concept of average and calculate the arithmetic mean and mode of a given set of numbers. Make predictions of outcomes of experiments based upon theoretical probabilities and explain actual outcomes. Identify significant individuals from the past in North America and explain their contributions to the cultural heritage of the United States.