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"The student has a test on Thursday or Friday on electricity -- specifically, chapters 17 and 18, resistance, capacitance, and direct current -- and so we reviewed the assigned portions of these chapters conceptually, and did problems together in chapter 17. Specifically, we went over I=Q/T, the direction of current, circuit diagrams, Ohm's law, resistors, osmic, non-Ohmic, and diode materials, resistivity, power (P=IV) and its relationship to resistance, the electromotor force, and resistors and capacitors in series and parallel. Other concepts that we encountered in the problems included free charge density, and the effective current of an electron in the Bohr model. She did an excellent job following along with various types of step-by-step reasoning through these problems, and was able to use the key equations independently, making sure to convert to the proper units. For problems where the answer isn't immediately obvious, unit analysis might be useful for the student. To prepare for the test, she will do the problems in 17 and 18, and reread the chapters to solidify her conceptual understanding. At our next lesson (Monday), we will start reviewing chapters 8, 7, 6, and 3 for the AP, as well as work on any new material given by her teacher."