Tera Blast Normal TM

Inside Area Zero. In the center of the Crystal Cave between Research Base 3 and 4.

Inside Area Zero. At the bottom of the Crystal Cave near Zero Lab. From the largest crystal pillar in the center, jump off one step and it will be tucked next to the giant pillar below.

Inside Area Zero. At the very bottom, near Zero Lab and after completing the story, follow the little path into a tiny cave and use Koraidon/Miraidon to jump on the crystal pillar inside to find the TM.