More than 90 percent of fourth-graders had teachers who placed a heavy emphasis on teaching numbers and operations.
# Rounds to zero.
NOTE: Detail may not sum to totals because of rounding. See complete data for numbers and operations, measurement, geometry, data analysis, and algebra and functions.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Mathematics Assessment.