change of base 90 videos

Average Velocity
Calculus The Derivative
How to compute the average velocity of an object moving in one dimension.
average velocity position height time change in position change in time 
Instantaneous Velocity
Calculus The Derivative
How to estimate the instantaneous velocity of an object at t=2 by computing average velocities over shorter and shorter intervals of time.
average velocity instantaneous velocity change in position change in time limits 
Isosceles Triangles
Geometry Triangles
How to define isosceles triangles, their components and how to determine their properties.
vertex angle leg base base angle converse remote interior angles 
Electrolysis
Chemistry Electrochemistry
Understanding how electrical energy produces chemical changes.
electrolysis hydrolysis 
Transmutation
Chemistry Nuclear Chemistry
How radioactive elements change their identities through transmutation.
transmutation 
Buffered Solutions
Chemistry Acids and Bases
How acids and bases are used in buffered solutions.
buffer buffered solutions 
Genetic Mutation
Biology Molecular Biology
Random errors in genes and their effects.
genetic mutation chromosomal base substitution 
Salts
Chemistry Acids and Bases
How neutralization reactions produce salts.
salt acids bases neutralization reaction 
pH and pOH
Chemistry Acids and Bases
How pH and pOH represent the concentration.
pH pOH acid base concentration 
Equilibrium Systems
Chemistry Acids and Bases
Understanding equilibrium systems.
acid base conjugate equilibrium system 
Trapezoid Midsegment Properties
Geometry Polygons
How to define the midsegment of a trapezoid, calculate its length, and relate it to a triangle midsegment.
midsegment trapezoid average bases midpoint 
Area of Parallelograms
Geometry Area
How to find the area of any parallelogram using rectangle area formulas.
area of rectangles base times height 
The Method of Substitution
Calculus Antiderivatives and Differential Equations
How to evaluate an indefinite integral using the method of substitution.
antidifferentiation method of substitution change of variables derivatives differential 
Simple Substitutions
Calculus Antiderivatives and Differential Equations
How to use the method of substitution to avoid common integration mistakes.
antidifferentiation method of substitution change of variables derivatives differential 
Phase Diagrams
Chemistry KineticMolecular Theory
How to draw and interpret phase diagrams.
phase change diagrams pressure temperature sublimation 
Finding the Slope of a Line from a Graph
Algebra Linear Equations and Their Graphs
How to find the slope of a line if given a graph.
slope change ratio fraction slope triangle 
Finding the Slope of a Line from a Graph
Algebra 2 Graphs of Linear Equations
How to find the slope of a line if given a graph.
slope change ratio fraction slope triangle 
Impulse
Physics Energy and Momentum
Understanding the concept of impulse.
impulse change momentum force over time 
The Definition of the Derivative
Calculus The Derivative
How to define the derivative of a function at a point x=a.
average rate of change slope secant line instantaneous rate of change tangent line limits derivative difference quotient