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 ...

In pre-kindergarten, children ages 3-5 develop a basic understanding of numbers and counting, and connect both to the idea of “how many.” Pre-k math tips work on recognizing, grouping, and comparing ...

Students will develop an understanding that objects and materials have characteristics or properties. Students will be able to recognize similarities between the properties of certain objects and ...

Researchers at Cornell University in Ithaca, N.Y., are using nanotechnology to build microscopic silicon devices with features comparable in size to DNA, proteins and other biological molecules -- to ...