| A | B |
| Learning Center | clearly defined space for a specific type of activity and learning;also known as an activity area |
| Developmentally Appropriate Center | learning center/activity area orangized to match the needs of the age group |
| Boundary | edge of a learning center on any one of its four sides; may be marked by a shelving unit, colored tape on floor, etc. |
| Automatic Boundary | boundary that is already there---e.g., a wall |
| Traffic pattern | direction children walk in as they move from center to center |
| Wet area | area close to a water source |
| Dry area | area far from a water source |
| Active area | area where there is some noise and lots of movement |
| Quiet area | area where there is very little noise or movement |
| Privacy | condition that allow a person to be alone |
| Easel | free-standing prop for signs and art work |
| Drying rack | place for wet art work to dry without being disturbed |
| Sensory table | sand and water table where children explore with their fingertips |
| Small manipulative | activity that involves small parts, hand -eye coordination, and small-muscle skill |