Master measurement concepts! Learn to find the space inside rectangles (area) and the distance around them (perimeter), including L-shaped composite figures.
Cover rectangles with unit squares and count to find area
Use length × width to calculate area in square units
Add all sides to find the distance around polygons
Find area and perimeter of L-shapes and T-shapes
Area measures the space inside a shape. Use length × width for rectangles. Always use SQUARE units (sq cm, sq ft).
Perimeter is the distance around a shape. Add all sides. Use LINEAR units (cm, in, ft).
Area: carpeting, painting, tiling. Perimeter: fencing, borders, frames. Know which to use!
Break L-shapes into rectangles, find each area, then add. For perimeter, trace around the outside edge.
Complete lesson plans and strategies
Introduction to area and perimeter
20 problems across all skills
10 test-format questions
Home practice activities
Complete solutions with explanations
Print all materials for classroom use or send home with students.