# A Birdbath

Leah counts the birds that come to her birdbath. In the morning, Leah counts six birds that come to her birdbath. In the afternoon, Leah counts fourteen birds that come to her birdbath. Leah says nineteen birds came to the birdbath. Is Leah correct? Show all your mathematical thinking.

### More Accessible Version

Leah counts the birds that come to her birdbath. In the morning, Leah counts five birds that come to her birdbath. In the afternoon, Leah counts three birds that come to her birdbath. Leah says nine birds came to the birdbath. Is Leah correct? Show all your mathematical thinking.

### More Challenging Version

Leah counts the birds that come to her birdbath. In the morning, Leah counts sixteen birds that come to her birdbath. In the afternoon, Leah counts fourteen birds that come to her birdbath. Leah says twenty-nine birds came to the birdbath. Is Leah correct? Show all your mathematical thinking.

## Plan

#### Underlying Mathematical Concepts

#### Possible Problem-Solving Strategies

#### Formal Mathematical Language and Symbolic Notation

A student may independently select a printed number line, number chart, ten frames, graph paper, etc. as they work on a task.