| Episode |
3-2-1 Contact Big/Small: Dinoaurs |
1980 |
| Episode |
3-2-1 Contact Big/Small: Volume & Efficiency |
1980 |
| Episode |
3-2-1 Contact Big/Small: How Big is Big? |
1980 |
| Episode |
3-2-1 Contact Big/Small: Animal Sizes/Scaling |
1980 |