Complex sentence: In November 2007, Brown starred as video host for St. Jude Children's Research Hospital's Math-A-Thon program, to show his support by encouraging students to use their math skills to help children with cancer and other catastrophic diseases.
Split into simpler sentences: In November 2007, Brown starred as a video host for St. Jude Children's Research Hospital's Math-A-Thon program. He showed his support by encouraging students to use their math skills to help children with cancer and other catastrophic diseases.