Consistent, quick kicking, combined with a stable body roll, helps you move everything forward when you're swimming freestyle. This drill gives you enough time to work on both.
The Superman drill enhances the outstretched body position of the front crawl stroke. Pausing the stroke to mimic Superman encourages you to lengthen your body position whilst staying streamlined.
This Single Arm drill allows you to concentrate on stroke accuracy. By isolating one arm, it allows you to focus on improving technique.
Head Tap Drill focuses on the recovery and breathing of freestyle. First start off without adding a breath. Once you're comfortable with the head tapping movement add breathing back into your stroke.