The easiest way to differentiate sides is to look at a swatch of stockinette stitch. The right side will be flat, smooth, and made up of uniform knit stitches in a ‘V’ shape. The wrong side will be raised, bumpy, and made up of wavy purl stitches. You can count your rows to determine which side is which. If you begin with a right side row, every odd-numbered row will be on the right side, and every even-numbered row will be on the wrong side.