Each the statements below are examples of misconceptions students have when learning to multiply fractions EXCEPT:
a) Treating denominators the same as addition and subtraction.
b) Matching multiplication situations with multiplication situations.
c) Estimating the size of the answer incorrectly.
d) Multiplying the denominator and not numerator.
d
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Rubrics should be developed based on what you are looking for in your class
a. True b. False
An online retailer uses the number of website clicks to predict sales revenue for an online hair-replacement (wig) company. The R2 statistic represents?
A. The percentage of variance in the predictor (clicks) variable accounted for by the outcome (sales revenue) variable. B. The proportion of variance in the outcome variable (sales revenue) accounted for by the predictor variable (clicks). C. The proportion of variance in the predictor variable (clicks) accounted for by unknown variables. D. The percentage of variance in the outcome variable (sales revenue) accounted for by unknown variables.
Systematically analyzing the advantages and disadvantages of each alternative before making a final decision may be the most important factors in effective decision making
Indicate whether the statement is true or false
Which of the following techniques have critics of Piaget's idea that object permanence needs time to develop used to support their case that infants are born with "persistence"?
A. They have measured the amount of time that infants spend looking at an event that violates an expectation of object permanence. B. They have looked to see if an infant will search for an object that is hidden under a piece of cloth. C. They have measured the age at which infants first show signs of separation anxiety. D. They have looked at whether infants appear to have strategies for searching for lost objects.