PF1 Discussion

[tdegeorge]

Can't remember how we did this before....but tagging names here because I don't see where to tag Abby's name on the side....

Author: @AbbyANoble
Reviewer: @tdegeorge

In Activity 7.1.2,

• part (a): the sine value of 5pi/4 should be negative in the table (it's correct in the answer, but not in the question)
• part (b): Omit the word "in".....It should say "Then sketch the graph of the sine curve using the points as a guide."

[tdegeorge]

In Activity 7.1.5,

• part (a) asks students to find the domain (and related back to Activity 7.1.2). Do we want to add a part to Activity 7.1.2 asking students to find the domain of the function they graphed before asking about the domain of the function sinx?
• I feel like there needs to be an intro to the activity. You state it in the first sentence of part (a), so I would suggest making that first sentence the intro.
• Ok, another thought - maybe make part (a) ask for the domain of the previous graph (referring back to the graph in the previous activity) and then have another part at the end ask for the domain of sinx now that they have graphed more than one period.

[tdegeorge]

In Activity 7.1.7,

• The word "to" is missing in the question for part (a) (also in the next two activities part (a))

[tdegeorge]

In Activity 7.1.12 ,

• The answer key for part (a) is missing a negative for the decimal value of cos (3pi/4)
• Extra word "in" in part (b)

[tdegeorge]

Observation 7.1.14,

• Just a reminder to add in the appendix link

[tdegeorge]

After Definition 7.1.11, we might want to consider adding in an activity looking at a graph that has a phase shift and a change in period. From my experience, many students have a hard time with that.