A teacher challenges students to study moon phases to determine if what they have learned from the textbook is accurate. How might a student investigate claims made in a textbook that moon phases occur in a 28-day cycle? a. observe the phase of the moon each night until a full moon can be seen.
b. compare the textbook phases to the actual moon phases seen in the night sky each night in 28 day period over a three-month time frame.
c. compare diagrams of moon phases from the textbook to diagrams of moon phases online
d. observe the moon phases are seen in the night sky as often as possible over a six month period

Read the excerpt from "mother tongue." lately, i’ve been giving more thought to the kind of english my mother speaks. like others, i have described it to people as “broken” or “fractured” english. but i wince when i say that. it has always bothered me that i can think of no other way to describe it other than “broken,” as if it were damaged and needed to be fixed, as if it lacked a certain wholeness and soundness. what best supports the inference that tan believes nonstandard english is no less valid than standard english? tan spends a lot of time thinking about her mother’s “fractured” english. tan has trouble thinking of descriptive words when she is writing. tan’s american education makes it difficult for her to understand her mother. tan winces when she describes her mother’s english as “broken.”