Jordin Sparks hopes to inspire her son on ‘Dancing with the Stars’. The 32-year-old singer is set to star on the hit TV series, and Jordin is determined to inspire her four-year-old son, Dana Isaiah Jr, in the dance competition. She explained: “I want to show him that you can be brave and scared at the same time. So I really am doing this for him.” Dana is already excited to watch his mom on the show. Jordin told PEOPLE: “‘Where are you going, Mommy?’ He asks me every morning. ‘I got to go to work. I got to go to rehearsal.'” The ‘Tattoo’ hitmaker feels as though her life is now entering a new…