The Ice Guides You
For the first room, simply activate the Frost Emitter and use Ultrahand to point it at the water to create ice sheets, slide them down the slope to hit the target.
Chest is located in the second puzzle past the Altar, again use the Frost Emitter to create ice sheets, before sending them down the slope, we need to block off the far end of the spikes to stop them which will then slide onto the target. Use the 4 solid slates to create two 2x1, then use them to move over the spikes using Ultrahand. Then make them into a 4x1 just before the edge of the target. Then glide to the ladder in the corner to get back to the slope, and slide down your created ice sheets.
Video Walkthrough of Mayanas Shrine