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Comparing and Measuring
 Comparing and Measuring
In Comparing and Measuring, students explore the concepts that underlie the science skills of comparing and measuring. The lessons are based on a developmental sequence that includes three activities: comparing, matching, and measuring. Initially, students compare lengths by matching measuring tape to their own heights and the lengths of their arms and legs. They make the transition from matching to measuring length by quantifying nonstandard units of measure (in this case, their own feet) and discover that using nonstandard units of measure produces varied results. Finally, students use standard units of measure, such as Unifix Cubes™ and measuring strips, to measure height, width, and distance. Through these activities, students begin to understand key measuring concepts, such as using beginning and ending points, a common starting line, and standard units of measure.
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