With the cast-on stitches on the needle in your left hand, insert the right-hand needle from left to right and from front to back through the first cast-on stitch.
Take the yarn from the ball on your forefinger (the working yarn) around the point of the right-hand needle.
Draw the right-hand needle and yarn through the stitch, thus forming a new stitch on the right-hand needle, and at the same time slip the original stitch off the left-hand needle. Repeat these steps until all the stitches from the left-hand needle have been worked. One knit row has now been completed.