Figuring out Usain Bolt's average speed over 100m when he broke the world record in 2009
This site allows you to make online conversions for many measurement systems.
The instructor in this video determines how to write a linear equation based on a real-life application.
This lesson demonstrates how to graph linear equations using a table of values. Associated practice follows the lesson.
In this video, the instructor utilizes a table of values to graph a linear equation.
In this video the instructor provides examples which demonstrate how to graph a linear equation using a table of values.
This lesson illustrates how to represent zeros, vertices and relative extrema on a graphing calculator.
This lesson demonstrates how to graph a linear equation in standard form by using the x and y intercepts. Associated practice follows the lesson.
This lesson defines the concept variable and applies it in a few situations.
This lesson contains eight practice problems for finding the vertex of a parabola.
This video is from the Khan Academy subject of Math on the topic of Arithmetic and pre-algebra and it covers Visualizing equivalent fractions.
This video is from the Khan Academy subject of Math on the topic of Arithmetic and pre-algebra and it covers We must have eaten more pie!.
This video is from the Khan Academy subject of Math on the topic of Arithmetic and pre-algebra and it covers What fraction of spider eyes are looking at me?.
Thinking about why dividing by zero is left undefined
Understanding why lattice multiplication works
Intuition as to why subtracting a negative number is equivalent to adding the absolute value of that number
Using the repeated addition model of multiplication to think about multiplying negative numbers
Why negative number products are defined in the way they are.
Why you can add the digits to see if something is divisible by 3
Why you can test divisibility by 9 by just adding the digits