be comfortable with no change 39 videos



Climate Change
Biology Conservation Biology
The effects of climate change.
climate change greenhouse effect weather patterns 
Equilibrium Changes
Chemistry Chemical Equilibrium
How Le Chatlier changes affect chemical equilibrium.
Le Chatelier's principle equilibrium changes 
Change of Base Formula
Algebra 2 Inverse, Exponential and Logarithmic Functions
How to use the change of base formula for logs to evaluate a logarithmic statement.
change of base log logarithm 
Change of Base Formula
Precalculus Exponential and Logarithmic Functions
How to use the change of base formula for logs to evaluate a logarithmic statement.
change of base log logarithm 
Phase Change
Chemistry KineticMolecular Theory
How to predict and understand the circumstances under which matter changes phase.
phase changes melting freezing condensation vaporization sublimation deposition 
Average Rate of Change
Calculus The Derivative
How to compute the average rate of change of a population over an interval of time.
average rate of change population time change in population change in time population models rate of increase 
Definite Integrals As Net Change
Calculus The Definite Integral
How to use the fundamental theorem of calculus to compute the net change of a quantity.
definite integral net change rate of change net change theorem fundamental theorem of calculus 
Instantaneous Rate of Change
Calculus The Derivative
How to estimate the instantaneous rate liquid is pouring out of a container at t=4 by computing average rates of change over shorter and shorter intervals of time.
average rate of change instantaneous rate of change change in quantity change in time limits 
Percent Change
PreAlgebra Decimals and Percents
How to calculate a percent change, percent increase, or percent decrease

Boiling
Physics Heat Transfer and Change of Phase
How matter changes phase from liquid to gas.
boiling boil phase change 
Freezing
Physics Heat Transfer and Change of Phase
How matter changes phase from liquid to solid.
freezing phase change 
Strategies for the Writing Section
PSAT PSAT Prep
Get familiar with the PSAT Writing section, learn the main strategies to master it and improve your PSAT test score
focus attention on awkward sounding words and phrases learn to read literally avoid long answer choices be comfortable with no change 
Instantaneous Velocity
Physics Linear and Projectile Motion
How to find instantaneous velocity.
instantaneous velocity changes in distance change in time 
Definition of Slope
Algebra Linear Equations and Their Graphs
How to understand the idea of slope.
slope change ratio fraction 
Evaporation
Physics Heat Transfer and Change of Phase
Understanding the process of evaporation.
evaporation phase change