Wagstaff Races Martha Speaks : Season 3 Episode 23

Wagstaff City's environmental club is having a "Go Green Go-Cart Race," fueled by alternative energy. Using sun, wind, and pond scum, the gang gathers at the starting line. Who will win the trophy — and most importantly, how? Vocabulary (E) energy, solar, alternative, convert, generate (I) cart, (re)use, green, power, parts