- p. 5Draw the Tiles. Join the marks to draw the unit squares, then count to find the area.
- p. 6Shapes Made of Rectangles. Count the squares in each part, then add to find the area of the whole shape.
- p. 12Tile Stories. Read each story, draw the tiles if it helps, then write the area.
- p. 14Mixed Review. Read each section, then find each area or missing side.
The standard
Determine the area of rectangles (or shapes composed of rectangles) presented in relevant problems by tiling and counting.
Element 3.GSR.7.2 of Georgia's K-12 Mathematics Standards (2021, effective SY2023-24), in the Geometric & Spatial Reasoning strand. It sits under standard 3.GSR.7: Identify area as a measurable attribute of rectangles and determine the area of a rectangle presented in real-life, mathematical problems.
What students practice
Students join tick marks to draw the unit squares themselves and then count, split shapes made of two rectangles on a grid and add the parts, and solve tile stories, drawing the tiles if it helps.
Where to find it
Think: join the marks to make 2 rows of 8 squares, so 16 square units.