Negative numbers can often seem confusing, but they don't have too. This video can help you develop and understanding of negative numbers along with how to uses them to add and "subtract".
0:07 Negative numbers around us
0:19 Sandbox numbers
1:30 The opposite of a positive number
2:55 Subtraction = Adding the opposite
3:45 3 - negative 5
4:13 The Power of Mathematical Visualization
The story comes from Visualizing Negative Numbers, by Professor James Tanton (The Power of Mathematical Visualization, The Teaching Company #1443). This video was produced by Lea Gaslowitz. The voice over was performed by Bolton Marsh.
