Many students can successfully prepare for the GED Tests on their own. But there are equally as many, if not more, that require at least some instruction.
I have found some success in small group math instruction. It is, in a sense, a GED Math support group. There is a group of students that meet 3 mornings a week for about an hour and a half. We work through the Steck Vaughn GED Math book. Most days there is about 3-4 students. New students join on a regular basis. Some do not come every day, but for those who are able to... it really pays off. Two students have recently taken their GED math tests, and both passed with scores in the 500+.
If you can, join or start your own GED Math Small Support Group. Have a "math conversation" every day and have fun!
Remember.... math can be fun!