Recent Tutoring Session Reviews
"Today we continued our work on torque and translational and rotational equilibrium. The student has a pretty good handle on the formulas and the methodology behind solving the problems. He is struggling with some of the trigonometry concepts required to solve them. We did a couple of practice problems to help iron out those issues."
"Covered Bernoulli's equation, electric fields, and dipole moments. He understood all the concepts expressed and showed that he knew how to perform these problems. I stressed the fact of keeping work in vector notation, because it is less prone to error. I again mentioned the fact of writing down initial conditions and givens on top of the page for reference. Also, I expressed the concept of drawing diagrams to better visualize a problem. I let him do a few problems on his own, which he was able to solve correctly. If he needed any help, I would assist him or give him direction but without giving him the answer so he would learn the material. Any practice that was left comes from the homework. He understands the material well."
"In today's session, we began by working through a homework assignment on Newton's Laws and forces in general. We specifically spent a fair amount of time discussing "elevator" problems, i.e. accelerating/decelerating in various directions and how that relates to the net force on an object. After that, we worked through a range-finding problem, and discussed how to find the most efficient way to solve such problems, since the student's tests are timed. For the last half-hour of our session, we worked on some problems that dealt with applications of calculus concepts to physics problems, such as finding areas under a curve and using derivatives and integrals to relate displacement, velocity, and acceleration in one or two directions."
"Today, we went over some problems on thermal expansion of heated materials and efficiency of heat engines versus coefficient of performance for refrigerators. Also, we looked at fluid dynamics, specifically, Pascal's principle and Archimedes' principle, along with buoyant force. Next time, we will finish fluid dynamics with surface tension and capillary action as well, as Bernoulli's equation and simple harmonic motion (SHMo)."
"Today's session was about how to calculate the dew point of a solution depending of the kind of substance mixed with the solvent. The student feels lost in this topic. It's been a lot of time since he studied it. At first, I explained the lesson. Then we solved some exercises together. He followed me , but he was struggling to fit all of the pieces of the puzzle. I let him do a problem by himself, but he was not able to do it. I went over the explanation on how to use the formulas and solve the problem. After this explanation he tried another problem and almost got the answer. He made a mistake, but he's on the track to understanding and solving this kind of problem by himself. He's got homework to do."
"Today's session was focused on momentum and collisions. The student and I discussed the relationship between force and change in momentum, conservation of momentum, elastic collisions, inelastic collisions, collisions in 2 dimensions, and rocket propulsion. Much like work and energy, these are topics that we quickly covered last Friday, but that she felt we needed to spend more time on. We began with a conceptual conversation about what momentum is, and how it is affected during collisions. Then we moved on to equations and example problems. We also went back through the quiz problems from last week. She seems to be enjoying these later topics more, and has a positive attitude about learning. She asks very good questions, which is indicative of a real understanding of the concepts we have covered so far."