Step 1: Draw a 4 or 8 inch square. Use a ruler to make your lines and measurements as precise as possible.
Step 2: Using a pencil, lightly draw a 4x4 grid of smaller squares onto your square (1 inch squares in the 4 inch square vs 2 inch squares in the 8 inch square).
Step 3: Atop the grid, draw lines marking out the edges of each tangram piece (see blue lines).
Step 4: Cut along the diagonal line to separate the pieces from the square.
Step 5: Erase the grid lines and decorate your pieces using markers, paint, coloured pencils and/or other decorative tools.