This is a self-checking circuit activity on expanding logarithms (logarithmic expressions). There is provided space for students to show work on the pages.Activity directions: Students begin with the problem #1, solve the problem, find the answer somewhere else on the pages ( which are three) and write "2" in the blank. Then student solve that problem (#2), search for the answer again and when find it write "3" in the next blank. Students continue in this manner until they return to the problem