Which of the Following Is Recommended in Chapter 7 as a Way

Which of the following is recommended in Chapter 7 as a way to teach secondary or middle school students about the value of ??

A) Tell the students that the value of ? is about 3.14 so that they can use this approximation in problem solving.
B) Have the students key the ? button on their calculators and use the displayed value to explain that the number is an approximation for ?.
C) Have the students measure the diameters of several objects and practice multiplying them by (22/7) so that they learn it as an approximation for ?.
D) Have the students measure the circumferences and diameters of several objects and calculate the ratios to approximate the value of ?.
E) Students at the secondary and middle school levels are not developmentally ready to understand irrational numbers and should learn to use ? but not worry about where it comes from.