EDUC 6470 Possible Topics

These are topics I considered using for the 20 minute lesson plan in EDUC 6470.

Topic: 8th-10th grade school earth science, the solar system.
Concepts: Orbit, cumulative change, radiation.
Optional concepts
Discussion: Sadler et. al, Wikipedia's misconceptions page ( http://en.wikipedia.org/wiki/Common_misconceptions#Astronomy ), and many educators have cited the power per area argument for the seasons, due to the tilt of Earth in its orbit. Few discussions of the orbital causes of the seasons list length of day, and none I've seen help students see the seasons as a cumulative effect rather than an instantaneous one, thus explaining why January, when the sun is higher in the US, is usually colder than December, or early August is usually hotter than mid-June.
Activity: Let's do some group work with a numerical model to compare the power/area-effect and the length-of-day effect. We'll see that the problem isn't too simple an inquiry, since there are different ways to tease apart the two effects, none quite satisfactory to me.
Features of inquiry

Topic: High school, physics, motion.
Concepts: Kepler's Law (ratios of periods, diameters); planets; heliocentric system; angular separation; orbit.
Optional concepts
Discussion
Activity
Features of inquiry

Learner poses question (whatever they want).
Learner directed to collect certain data (distance of dots from Jupiter over time).
Learner forms or is guided in formulating explanations.
Learner directed toward area of sources of scientific knowledge or given possible connections.
Learner provided broad guidelines to use to sharpen communication, or given steps and procedures for communication.

Topic: 9-12th grade physics electricity and electronics.
Concepts: Capacitance, RC timing, resistors, powers of ten, manufacturer's notations on capacitors and resistors.
Optional concepts
Discussion: Instead of teaching the students directly about capacitors, couch it in an on-the-job training kind of experience. The activity seems to be about sorting these capacitors, the time-is-proportional-to-RC understanding is treated as something one could too-easily learn for it to be the actual subject of a lesson.
Activity: Pass around a bucket of capacitors, students each take a few, try to determine value of capacitance by reading tiny text on capacitors. Use voltmeter/oscilloscope to check, by timing rise or fall of voltage of capacitor in series with a resistor and a battery. Use oscilloscope instead of voltmeter for large group.
Features of inquiry

Learners directed to collect certain data (time of rise/fall from two times noted on stopwatch, from voltmeter/oscilloscope).

Equipment: Voltmeter, oscilloscope, stopwatch, breadboards, resistors (10kΩ-10MΩ range), capacitors (100-100000 pf range, 0.1-100 micro-farad range).

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