Unit 3 math expression words. The words have a definition, and an example. Words include - liquid volume, milliliter, weight, liter, gram, kilogram, pint, cup, quart, gallon, fluid ounce, pound, ounce, elapsed time, line plot, inch, foot, key, bar graph, frequency table, ruler, vertical axis, horizontal axis, tally chart, am, pm, pictograph, axis, line plot, and scale