Two-dimensional (2D) shapes are completely flat. They cannot be picked up. A polygon is a 2D shape with straight sides that meet at vertices. Polygons have names that show the number of sides they ...
Priya Chandrashaker and her daughter sort objects by attributes. Priya Chandrashaker and her daughter show how to sort objects into groups based on attributes -- the characteristics of objects. She ...
Researchers use a viscoelastic material flowing through a microfluidic chip to sort E. coli bacteria based on their degree of elongation. By using this 'lab-on-a-chip' device, scientists may be able ...
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