Periodic Unit ToDos

[flannery-denny]

Periodics1

• On "Converting between angles": blank circle with space for degrees and radians. THEN ask kids to label the hours on the clock (maybe). Also ask kids to do major angles (0. 90. 180. 270. 360), not mid angles. Provide decimal and irrational representations (when we give angles away in the workbook page and solutions offer both).
• Right now unit clocks relies on a Desmos activity. It would be a win to rewrite it in Pyret, so students define their functions for the clock and use a reactor to see if they did it right. Obviously the reactor would be hidden in a context -- this might be a cool challenge to throw at Dorai or Ben! Rewrite "clock graph" from desmos as a Pyret reactor #2232
• Applied math contexts for Shriram #2231

Periodics2

• Split into sections -- perhaps a separate section for some of the coefficients? Frequency is particularly tricky, so maybe it deserves its own section?
• Add a worksheet where students are given periodic situations, and have to fill in the blanks of a periodic parent function as best they can.
• Remind students and teachers that we're focusing in on sinusoidal functions specifically, not periodic functions in general

Periodics3

• Break up the single section and workbook page. modeling-recent-co2.adoc is too crowded! The first part (1-6) should be a whole page, probably with some clarifying prose or questions to clear up common misunderstandings
  -- There were so many fill in the blanks and teachers had a hard time following directions (e.g. people have to come up with a horizontal value of the phase shift... we don't tell them to drop a line down from the point on the curve... find the date - drop a vertical to the x-axis)"
• The second part (7-9) should be its own page. Maybe have students convert the model to sin, to give them more practice?