How matter changes phase from liquid to solid.
How to find instantaneous velocity.
Understanding the differences between empirical and molecular formulas.
How to understand the idea of slope.
Understanding the process of evaporation.
Understanding the process of condensation.
Understanding the acceleration of an object.
How to compute the average velocity of an object moving in one dimension.
How to estimate the instantaneous velocity of an object at t=2 by computing average velocities over shorter and shorter intervals of time.
Understanding how electrical energy produces chemical changes.
How radioactive elements change their identities through transmutation.
Short, helpful video on ACT prealgebra by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm.
How to find the slope of a line if given a graph.
How to draw and interpret phase diagrams.
How to evaluate an indefinite integral using the method of substitution.