| A | B |
| Physical Development | Growth and the ability to use muscles and body parts for particular skills. Running, walking |
| Intellectual Development | The growth of a child's ability to think and reason. Reading, writing |
| Emotional Development | Means how children start to understand who they are, what they are feeling and what to expect when interacting with others. Happy, Sad |
| Social Development | Process by which a child learns to interact with others around them. Play with others |
| Gross Motor Skills | Involve using the large muscles in the torso, arms, and legs to complete whole-body movements |
| Fine Motor Skills | The ability to make movements using the small muscles in our hands and wrists |
| 2 Year Olds | 24 months |
| Terrible Two's | Defiant behavior |
| Parallel Play | Form of play in which children play next to each other, not with each other |
| Regression | When a child loses skills that they had once established, and is a cause for concern. |