Helping Children Understand Measurement Using a Ruler
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Publisher:Ohio Council of Teachers of Mathematics
Citation:Ohio Journal of School Mathematics, no. 65 (2012), 40-44.
Two teachers incorporate research findings into helping a first grade class build the conceptual foundation of the ruler. Assessing students to identify common misconceptions and errors reported in the literature, the teachers design a lesson in which students effectively create their own rulers from square inch cardstock. By creating their rulers, students find similarities between their manufactured rulers and the classroom set. As a result students seem to better understand the "meaning" of the spaces between the numbers on a ruler, and use the ruler more accurately to measure.