Posts Tagged ‘sum’

Describe Sums and Differences of Integers (Common Core Math 7/8 Ex 19)

This video explains how to find sums and differences of integers and then describe them as greater than 0, less than 0, or equal to 0.

Find Two Fractions with Different Denominator with a Given Sum (Common Core 5/6 Math Ex 19)

This video explains how to find two fractions with different denominators that have a given sum by modeling fractions.

Find Two Fractions with Different Denominator with a Given Sum (Common Core 5/6 Math Ex 9)

This video explains how to find two fractions with different denominators that have a given sum by modeling fractions.

Ex: Approximate the Area Under a Curve Using Rectangles (Left Using Graph)

This video explains how to use rectangles to approximate the area under a curve.  The left side approximation is used.  The function values must be estimated from the graph.

Ex: Approximate the Area Under a Curve Using Rectangles (Right Using Graph)

This video explains how to use rectangles to approximate the area under a curve.  The right side approximation is used.  The function values must be estimated from the graph.

Ex: Approximate the Area Under a Curve Using Rectangles (Midpoint Using Graph)

This video explains how to use rectangles to approximate the area under a curve.  The midpoint aproximation is used.  The function values must be estimated from the graph.

Proof – The Derivative of Cosine: d/dx[cos(x)]

This video proves the derivative of cosine equals negative sine.