Oona must pass her lab director's test or risk getting kicked off Odd Squad. Otis helps a worried Oona prepare for her test as they use addition and subtraction to combine various gadgets together. You can do it Oona! Curriculum: Counting on and back, Addition and Subtraction The Odd Squad show aims at problem solving and thinking and includes building procedural fluency as well as building conceptual understanding. The show uses creativity and imagination to foster inquiry and math-talk.