Two-dimensional (2D) shapes are completely flat. They have two dimensions – length and width. A polygon is a closed 2D shape with straight sides that meet at vertices. Polygons can be regular or ...
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Active reading: A tutoring program uses movement, balls, sandboxes and more to bridge the literacy gapThe Learning Disabilities Association of Pennsylvania offers free tutoring for Pittsburgh’s underserved kids after the pandemic lowered reading scores.
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