New Super Mario Bros. U: Meringue Clouds-2 -- Seesaw Shrooms

The mushrooms here tilt when you stand on them. To deal with the Fuzzies, grab Yoshi from an item block. With Yoshi, glide from the mushroom where you found him to the mushroom with the first Star Coin. Past the Paragoombas and Piranha Plants is the midpoint. Beyond the midpoint, Lakitus appear and throw Spinies. Take Lakitu's cloud and fly above to a ring of coins with the second Star Coin. Soon, you'll find some pink expanding mushrooms. There's a pipe over a Fuzzy. Have Yoshi bounce off the Fuzzy to reach the pipe. The third Star Coin is here, high in the sky. Jump with Yoshi, then jump from Yoshi in midair to reach it. You'll soon reach the flagpole. This opens the path to the Fort.