Clarification 2: Each rectangle within the composite figure cannot exceed 12 units by 12 units and responses include the appropriate units in word form.

• Perimeters of Polygons with All Sides Known Students are asked to find the perimeters of three different polygons.
• Decompose Shapes to Find Area Students are given a rectilinear shape and asked to find its area.

• Area: We Need to Know In this lesson students build on their knowledge of area by finding the area of a variety of composite figures and create a composite shape when given an area.

• Double Bubble Diagram to Compare Math Concepts Unlock an effective teaching strategy for helping students make connections in mathematics using the Double Bubble Diagram in this Teacher Perspectives video for educators.

• The Square Counting Shortcut This is a rectangle subdivision task; ideally instead of counting each square. students should break the letters into rectangles, multiply to find the areas, and add up the areas. However, students should not be discouraged from using individual counting to start if they are stuck. Often students will get tired of counting and devise the shortcut method themselves.

• Decompose Shapes to Find Area Students are given a rectilinear shape and asked to find its area.
• Perimeters of Polygons with All Sides Known Students are asked to find the perimeters of three different polygons.