There’s a P Switch hidden in a Block at Point 1. Ground pound through the Blocks just right of the first gap, then move just far enough to the left to hit the Block directly above the gap. Stomp the P Switch to transform all of the nearby Blocks into coins.
The first Moon Coin is floating below the walkway at Point 2. Search the Blocks above the Moon Coin to find a P Switch.
Stomp the P Switch to expose the area below the walkway. Gather as many blue coins as you can, then enter the green pipe on the ground. When you do, it launches you through the Moon Coin and back to the walkway.
There’s a Beanstalk inside the first Block past the rotating platforms at Point 3. Ground pound through the Blocks to the right, then move just far enough to the left to jump up and reveal the Beanstalk.
Climb up and stomp the P Switch near the top of the Beanstalk. If you move quickly, you can use the rotating platforms to collect a Gold Flower from the ? Block at the top of the area.
When you reach Point 4, ground pound through the Blocks to create a path to the Moon Coin. Stomp the nearby Koopa, then throw its shell through the opening to automatically collect the Moon Coin.
When you pass through the Red Ring at Point 5, a Coin Coffer leaves a trail of red coins for you to follow. Hop along the path to collect all of the red coins before they vanish.
The third Moon Coin is located at Point 6. Search the nearby Blocks for a ? Switch. Activate the ? Switch, drop to the ground, and dash over to collect the Moon Coin.