The following data represent how many minutes people spent a…
The following data represent how many minutes people spent at the table eating dinner last night. Determine the mean and the median of each data set. Which data set has the greatest difference between the mean and the median? Explain which data set has the larger variation without doing any calculations.
Read DetailsWhen teaching algebraic concepts to students, it is importan…
When teaching algebraic concepts to students, it is important to help them link various representations. Consider the series of arrays shown here. When determining the number of dots in a particular array, two students had two different answers: (D = the number of dots and A = the array number.) Student A said D = 3A + 4. Student B said D = 3(A + 2) – 2. Make two drawings of the fifth array in the sequence and show/mark how each student might have looked at the array in order to derive his or her equation. Algebraically show how the two equations are equivalent.
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