Table of Contents & Video Times
 PreK
 0:41 Play the "Sum Thing Else Game," just find a match, keep the cards and go again

 Elementary School  Arithmetic
 3:04  Add and subtract fractions, decimals, integers, on a nomograph
 5:19  Add and subtract fractions with multiple strips and fraction bars
 9:42  Verify a 1/4bar with another 1/4bar have the same length as a 1/2bar.
  Find “manipulatively” a fraction greater than 1/4 but smaller than ½ and verify the size through decimal approximation
 12:04  Show me 35 cents. Show me 35 cents in another way

 Middle School  Pre Algebra
 13:54  Divide the circle to compute its area
 21:22  Reinforce mental computation and words like multiple, reciprocal, cube, double, and prime

 High School  Algebra, Geometry, Algebra II, Statistics, Trig
 29:45  Make multiples of x+2 to represent 2(x+2) and x(x+2) and (x+2)^2 and
  Simplify algebraic expressions and solve equations using tiles and tokens
 39:15  Run vertical and horizontal line tests and
  Analytically take an inverse
 43:34  With a ConnecttheDots, Find Sides & Angles of a Right Triangle

 Precalc
 44:01  Curve shift/ translate many functions
 50:27  Determine if two angles are coterminal and
  Define standard position
 51:32  Build a polynomial or rational function
 56:22  Assemble a Unit Circle jigsaw puzzle
 58:48  Add vectors

 Calc I
 1:02  Take a limit by approaching and Take a derivative by definition
 1:09  Label a graph with function emojis< Mean Value Theorem, Rolle's Theorem
 1:22  Graph the sin(x) and its 1st, 2nd, 3rd, and 4th derivatives using trace
 1:26  Examine angle of elevation/depression and ladders with h(x), y(x), h(y), x(y), and h as variable, and h as a constant
 1:30  Compute an Antiderivative by Reimann Boxes

 Extracurricular
 1:43  Play addition rummy with a deck of cards
 1:44  "Roll" a die or pair of dice

 History
 1:45  Hold a shekel in your hands
 1:46  Move an abacus very slowly
 1:48  Use Napier's bones to multiply
 