Belly breathing is a popular relaxation technique used to reduce anxiety and pain in children during medical procedures. The investigators have developed a biofeedback game that will help teach children how to belly breathe in an interactive way. Existing studies have shown that biofeedback tools are effective ways to teach relaxation techniques to children. The purpose of this study is to evaluate 1) whether this new biofeedback tool is a more a effective and engaging way to teach belly breathing to children and 2) whether the application is more effective in reducing procedural pain and anxiety compared to standard of care, self-directed belly breathing alone or self-directed belly-breathing combined with visual distraction. The investigators hypothesize that: