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Tadpole people appear in young children's drawings before they learn to draw torsos and move on to more realistic depictions such as stick figures. Preschoolers who draw tadpole people will generally not draw torsos, even when instructed to include features that are part of the torso, such as a belly button. Instead, they tend to draw the ...
The Draw-A-Scientist Test (DAST) is an open-ended projective test designed to investigate children's perceptions of the scientist. Originally developed by David Wade Chambers in 1983, the main purpose was to learn at what age the well known stereotypic image of the scientist first appeared.
The Kinetic Family Drawing, developed in 1970 by Burns and Kaufman, requires the test-taker to draw a picture of his or her entire family. Children are asked to draw a picture of their family, including themselves, "doing something." This picture is meant to elicit the child's attitudes toward his or her family and the overall family dynamics.
A worksheet, in the word's original meaning, is a sheet of paper on which one performs work. They come in many forms, most commonly associated with children's school work assignments, tax forms, and accounting or other business environments. Software is increasingly taking over the paper-based worksheet.
Free "Matter and Motion" e-books are available on the Internet. Feynman's Lost Lecture: The Motion of Planets Around the Sun by David Goodstein & Judith R. Goodstein (ISBN 0-393-03918-8, W. W. Norton & Company: New York, 1996). In this book the hodograph is used to geometrically derive elliptical (Keplerian) orbits from Newton's laws of motion ...
For jointly wide-sense stationary stochastic processes, the definition is = = [() (+) ¯] The normalization is important both because the interpretation of the autocorrelation as a correlation provides a scale-free measure of the strength of statistical dependence, and because the normalization has an effect on the statistical ...
A draw sheet is a small bed sheet placed crosswise over the middle of the bottom sheet of a mattress to cover the area between the person's upper back and thighs, often used by medical professionals to move patients. It can be made of plastic, rubber, or cotton, and is about half the size of a regular sheet.
Children's drawings also develop as a child ages and refines their fine motor skills. This has been widely studied, especially by Rhoda Kellogg (1898–1987), following children from 2 years to 8 years of age. Her research has found that the artistic gestures of children evolve from basic scribbles to consistent symbols.