Unpacked Content
Knowledge
Students know:
- Area is a measurable attribute of two-dimensional figures.
- The area measurement of rectangular regions has a multiplicative relationship of the number of square units in a row and the number of rows.
Skills
Students are able to:
- Decompose rectilinear figures as non-overlapping rectangles using concrete materials.
- Find the area of two rectangles, and create a rectilinear figure by joining the two rectangles (without overlapping), and determine the area of the created rectilinear figure as the sum of the two rectangles.
Understanding
Students understand that:
- rectilinear shapes can be decomposed into non overlapping rectangles, and the sum of the areas of the nonverlapping rectangles is equivalent to the area of the original rectilinear shape.
Vocabulary
- Compose
- Decompose
- Area
- Additive
- Rectilinear figure
- Equivalent
- Non-overlapping
- Overlapping
