This page has two analyses that provide extra detail.

The first about the triplets and performance across them, and the second is about the videos, and which triplets are covered in each video.

## Analysis and Structure of the Triplets

Detailed analysis of the 20 questions in the homework, and how there were 5 key triplets of questions. You can call see from this table the percent correct across the three items in each triplet.  You see a generally flat trajectory in the control group, and learning in the control.  Triplet 4 is one notable exception that does not seem to show learning in the experimental group.  We can only speculate, but it might be caused by  some proactive interference from them learning on triplet 3 that then interference with learning on triplet 4.  But this is conjecture.

 Triplet Content and Example HW Ques. #s % Correct in Control % Correct in Expr 1 Multiplying powers with like bases: (33)(3-2) 4, 5, 6 61,61,66 27,61,84 2 Multiplying powers with variable bases and coefficients:(3x4)(2x-2) 8, 9, 10 55,55,39 39,68,45 3 Dividing powers with like bases:(65)/(6-7) 11, 12, 13 36,42,45 23,58,87 4 Dividing powers with variable bases and coefficients:(2y9)/(8y3) 14, 15, 16 48,21,52 16,3,23 5 Dividing powers with multiple variable bases:(x4y2)/(x-8y-3) 17, 18, 19 73,73,72 58,77,94 Additional Questions Rewriting negative exponents using only positive exponents: Rewrite 4-3 using only positive exponents. 1, 2, 3 100,100,100 90,100,100 Challenge Questions for ecological validity not tested Exponent= 0 1210 Dividing powers with multiple variable bases where an exponent is 1 (x2y)/(x12y7) 7 20 67      56 71 70

## Analysis of the videos

The following table show which questions were review from each video.

 Condition Time Spent Question Numbers Reviewed Triplets Addressed YouTube URL (links are easier to browse from here http://web.cs.wpi.edu/~nth/PublicScienceArchive/Analysis.htm) Order Number on Film Control 6 min 49 sec 15, 17, 15 4, 5, 4 48 Control 5 min 42 sec 8, 4 2, 1 50 Control 9 min 27 sec 7, 11, 10, 15, 14, 16, 8 3, 2, 4, 4, 4, 2 52 Exper. 5 min 52 sec 4, 10, 14, 15 1, 2, 4, 4 49 Exper. 9 min 30 sec 4, 10, 14, 15, 16 1, 2, 4, 4, 4 51 Exper. 9 min 26 sec 4, 10, 14, 15, 12 1, 2, 4, 4, 3 53

Kelly (2012).