"This session we split our review into two parts: Chemistry and Algebra.
We began with Chemistry and we went over Stoichiometry, or the study of Chemistry as it relates to mass. We began by reviewing what an atomic mass unit is and defined it exactly as one twelfth of a normal carbon atom. We reviewed that the masses of a proton and a neutron are basically the same and although an electron does have a mass, it is close to being zero when you compare it to the mass of a proton and a neutron.
We then figured out that each atom or each molecule can have a molecular mass, by adding up the masses of the atoms in the molecules we get one overall number. We then went on to discuss the mole. I showed the student that most problems will give us some information, such as the mass of a substance, then you can convert that mass to a number of molecules using the molecular mass that we discussed earlier, and then convert that number of molecules into moles. Then you can use the formula for the chemical reaction that it is involved in to determine how many moles of product that you will obtain and therefore how many molecules of product you will have and ultimately, how much mass of product you will have. We did an example together illustrating this.
We moved on to Algebra. She is beginning a unit on conic sections. We began today with a discussion about parabolas and how they are written and graphed. We went over the parabola of a form f(x) = a(x-h)^2+k and I showed her how to graph this thing when you're talking about the location of the vertex, whether it is going up or down, and whether it is narrow or wide. We did several examples together. We then finished by discussing that a parabola can also be written in the form f(x) = ax^2 + bx + c, and you can locate where the vertex of the parabola is by using negative b over 2a for the x direction, and f(x) at that point for the y direction.
A very productive session! five out of five stars"