When teachers plan units of study about cultures, they should organize them around
a. the native countries of the students’ ancestors.
b. cultural universals that facilitate comparisons and contrasts.
c. specific skills and processes as required by state standards.
d. powerful ideas that are integrated across content areas.
ANSWER:
b
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What will be an ideal response?
What is your 95% confidence interval?
Jorge would like to examine the effects of fatigue on mental alertness. He prepares an attention test that requires subjects to sit in front of a blank TV screen and press a response button each time a dot appears on the screen. A total of 110 dots is presented during a 90-minute period, and Jorge records the number of errors for each subject. Two groups of subjects are selected. The first group of subjects is tested after they have been kept awake for 24 hours. The second group is tested in the morning after a full night’s sleep. The data for these two samples are as follows: AWAKE 24 HOURS RESTED Sample size = 10 Sample size = 10 Mean # dots detected: 25 Mean # dots detected: 35 Sum of Squares = 253 Sum of Squares = 310
For a variable that is normally distributed with a mean of 150 and a standard deviation of 25, approximately ______ of the scores are between ______ and ______.
a. 95%; 125 and 175 b. 95%; 100 and 200 c. 68%; 100 and 200 d. 99%; 125 and 175
The increased testing of children in preschools can be attributed to
A) new research. B) new federal legislation. C) new and more valid tests. D) new brain research. E) new teacher training curriculum.