Patterns were mostly left out of the common-core math standards in the early grades (kindergarten and 1st grade) due to a lack of evidence that they helped children understand later math concepts.

Patterns were mostly left out of the common core math standards in the early grades (kindergarten and 1st grade) due to a lack of evidence that they helped children understand later math concepts.

The researchers, who followed more than 400 preschoolers in Chicago, found educators were more inclined to describe Black students’ behaviors as “problematic” than other students.

Kathleen Mullan Harris, R. Kelly Raley, Ronald R. Rindfuss, Family Configurations and Child-Care Patterns: Families with Two or More Preschool-Age Children, Social Science Quarterly, Vol. 83, No. 2 ...

Analyses revealed developmental differences in play patterns in same-age but not in mixed-age classrooms. Three-year-olds in mixed-age classrooms were more likely to engage in "complex" modes of play ...