You are teaching a lesson on volume for a second grade class. You really want to involve your students in this measuring activity. Which would be the best procedure for involving them? You give them a matching worksheet which shows the corresponding measurements for cups, pints and quarts. You demonstrate how a pint equals two cups by pouring water from a cup container to a pint container. You do the same to demonstrate that two pints equal a quart and four cups equal a quart. You use construction paper to cut into halves and fourths. You then use a whole sheet to represent a quart, a half sheet to represent a pint and a quarter sheet to represent a cup. You have the students compare using the cut and whole sheets. You partner the students giving each set a cup, pint and quart measuring unit. You also give them split peas or some other small bean to pour into each cup. Each group works over a basin. You let them explore, stopping frequently to see what they have discovered. Each group reports and you discuss what they have found