| Partial Sums: Addition |
| Power Point Demonstration |
| Video Demonstration (Windows Media Player) (QuickTime Player) |
| Trade-First: Subtraction |
| Power Point Demo |
| Video Demos (Windows Media Player) (QuickTime Player) |
| Partial Products: Multiplication |
| Power Point Demonstration |
| Video Demos (Windows Media Player) (Quick Time Player) |
| Lattice Method: Multiplication |
| Power Point Demo |
| Video Demos (Windows Media Player) (Quick Time Player) |
| Partial Quotients: Division |
| Power Point Demo |
| Video Demos |
| Partial Quotients - Decimals |