If you are asked to use equatIO when filling out answers in a Google Form, click on the blue box icon that shows up on the right side of the answer box. equatIO tool bar will show up at the bottom.

If you noticed that you made a mistake after you added your answer, you can either hit the blue x to delete and start all over OR you can hit the equatio box to reinsert what was entered to alter it. Then hit insert math button one last time.

Don't forget that you can use all features of equatIO with Google Forms. You can insert graphs, talk your math to your chromebook to convert to text or if you have a touch screen chromebook, you can write out equation on your screen.