Cant find W6-A secound coin

Here try this one.
WORLD 5-4
You can find the Star Coin at this stage of this world. Look at the photo.

• At this stage, you should pick up a Bob-Bomb and then quickly jump to the ledge.
• Drop the Bob-Bomb in the white blocks to get rid of some of it and then drop down to the raft.
• The Star Coin should now appear.
  
• pick it up and then enter the pipe above.

WORLD 6-5
You can find the last Star Coin in a Secret Area with a Secret Goal.

• Look for the four item box in the water. like in this photo.
• You will need to jump or swim in the middle of the four boxes to reveal a hidden box that contains a beanstalk.
• Climb up the beanstalk to reach the other area.
• In the Other Area, you will need to pick up a propeller block.
• Get the coins and the go right to the second floating box.
• From this box, you will need to spin to reach the Star Coin and the Secret Goal.

WORLD 7-6

• After you came across some small parabeetles,then you should come to a line of big parabeetles.like in this photo.
  
• Look down low and you should see the Star Coin poking above the low clouds.
• Ride down to the Star Coin using the Last Big Parabeetle.
• Then wait for the small parabeetles. and then Jump down to get the coin and step on the small parabeetle. (Be careful in this part, you should jump at the right timing so that you wont fall off the clouds.)

WORLD 8-7

• You should ride the next platform down as you jump a geyser like in the photo.
• Stay near the front of the the platform so that you can grab the Star Coin before hitting the geyser.
• After getting the Star Coin, quickly jump to the platform above you to avoid the geyser.

Thats it. Goodluck, Hope my solution helped. Please give some feedback regarding my solution.

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Here is a star coin location guide to help you with all those tricky to get star coins. <br> http://www.gamefaqs.com/portable/ds/file/920787/43215 <br> I hope this helps!

In 6-3: Go all the way to the right until you see a red pipe. Enter it and go to the right and go up. From the pipe you've exited out, move two pipes to the right and go down. It should be there.

In 6-6: Go to the right to the Spinner. Jump on it and then move right to another one. Jump on this one again and land on the right ledge. Another Spinner should be very near; jump on it without moving while flying and land on a ledge on your right. Jump up to see another Spinner; jump on it to go up again. While flying, go to the left to see a platform. There is the coin!

Hope this helps!

This one can be a little tricky.
You'll notice before the middle mark flag that there is a small pipe under a little bridge. After the flag there is another pipe with some gray blocks over it. These are small pipes so you have to be the tiny mario when you enter the stage.

So, go get a tiny mario mushroom and finish the stage with it.
End world castles 3 and 5 have these but can be a little hard.
I've heard of stage 7-A being rather easy to get and go.

Once you have that, get to 8-8 and carefully move to the middle point.
You die after being hit just once, so be very carefull.
(I'd suggest simply focusing on the second coin alone and using a spare fireflower or the like after you get it.)

When you see the first small pipe, you can jump up and hit a hidden block containing a star just over it. Grab the star, it'll help.

With that get to the second pipe with the gray blocks over it and wait for the volcano rocks to fall and break the gray blocks for you.
Try to stand off to the side and wait for them to hit the middle block. Though you should be able to squeze under the middle one if your careful.

Once there go down the pipe and you'll run into a mini maze of sorts. Make your way through it to the Star Coin at the left and exit with the pipe at the top left.

From there I suggest using a spare fireflower or mushroom and making your way out of the stage.

Good luck, and have fun.

The second coin is around the very middle of this stage.
It can be rather easy to miss if you take the first pipe near the middle of the stage up into the clouds.

If you skip this pipe and enter the next one and it'll launch you over a rock wall and over another pipe that'll send you back.
If you continue forward you'll notice there is a ceiling of rock above you with an open area. Wait for the water to rise and swim up to the top.
The second star coin should be there.

If you take the first pipe into the clouds then you'll exit out of an orange pipe.
You can back track to the left and get the coin that way too.
Though you'll need to wall jump to get over the rock walls in your way.

Incase you have trouble with wall jumping I'll give you some tips.
To wall jump you just jump against the wall and hold the direction the wall is in. Mario should lean and slide against it. Press jump and you'll fly off in the other direction.
If you are between two walls you can use this technique to jump back and fourth up the walls in old video game wall jumping style.
Just alternate directions accordingly and press jump when you are on the wall.
The timing shouldn't be too hard, but remember to practice it till you get it.
don't worry about the time either, you can always try again if you want to.

Good luck and have fun.

just go straight ,hang and hand to hand on cliff sides at half way drop down at cannon wall and follow the coins you have to run, jump against the wall and push off with kick to get to higher ledge i hope this helps

super mario ds. on world 4 level 5, how do you get the third coin

to get the last coin on world 6 look everywhere make a high jump to get it

in W6-A i used mini mario to get 2nd coin. go into the falling sand that looks like a waterfall press to the left until u land on the ledge its easier to wall jump with mini mario. good luck.

When you get to the mid-level point, there are two rows of bricks and two jumping turtles. The top row question mark holds a mushroom to make you mid-size. Knock out the brick to the left of this. Then go down to the bottom row and the middle brick (directly below the above hole) holds a vine. Hit the brick to make the vine grow and climb up.

Once you are up in the clouds, jump on the mushroom. Be careful not to fall off. Ride the mushroom past the gold coin, keep going and there is a secret pipe. Jump up and go up the pipe. This will get you past world 7-6.