1) Boards with ups and downs 2) Fluctuates 3) Fluctuates wildly 4) Fulcrum locales 5) Goes back and forth 6) Goes up and down 7) Has repeated ups and downs 8) Has ups and downs 9) Is wishy-washy 10) Playground apparatuses 11) Playground equipment 12) Playground fixtures 13) Playground items 14) Playground props 1) Teeters