📐 Area of Shapes

5 lessons — learn to measure the space inside flat shapes!

Lessons

Area of a Square

3 pages · what area means, counting unit squares, side × side

Area of a Rectangle

3 pages · length × width, missing-side problems, real-world examples

Area of a Parallelogram

3 pages · base × height, why slant doesn't matter, cut-and-slide proof

Area of a Triangle

3 pages · base × height ÷ 2, the "half a rectangle" idea, practice

Area of Shaded Regions

4 pages · subtract-the-hole strategy, combining shapes, mixed & picture practice

🖨️ Tip: Work through the lessons in order — each one builds on the last. Use Ctrl+P (or ⌘P) to print.