Posts Tagged ‘science experiment kindergarten’
Science Experiment Kindergarten
June 25th, 2007
Question: please help me, im desperate?
in my science class we r workin on variables, controlled, responding, manipulated, and expiermental.
im not understanding EV or CV or RV or even MV for that matter.
here is my question for you though for homework though.
gloria wanted to find out if the color of food would affect whether kindergarten children would select it for lunch. she put food coloring into 4 identical bowls of mashed potatoes. the colors were red, green, yellow, and blue. each child chose a scoop of potatoes of the color of their choice. gloria did this experiment using 100 students. she recorded the number of students that chose each color.
i know the MV is colors of potatoes and RV is what color was more popular.
but what would the CV (there are 2 of them) and EV be?
and can someone please explain EV better to me? i dont really understand it much.
Answer: CV would be the type of food used and the bowls which are identical (so as not to influence the children’s choice).
An experimental variable is the thing being tested. Everything else in the experiment or all other variables must be the same. These variables are also called the controlled variables. Keeping these variables the same allows the experimenter to show that it was the experimental variable that caused the results.
Grant’s kindergarten science project
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