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Tina Le
HDFS 391
Elizabeth Christensen
10 March 2022
1
HDFS 391 Homework #5
Study 1
Dr. Rogers wanted to test a new “sing-along” method to teach math to eighth graders (e.g., “I love
to multiply” to the tune of “God Bless America”). He recruited teachers from a local middle school
to participate in the study. Teachers were instructed to use the sing-along method in their first
period math classes, and to continue having their students solve math problems with their old
method during their sixth period math classes. At the end of the term, Dr. Rogers found that the
first period classes scored significantly lower than the sixth period classes on a mathematics
achievement test. He concluded that the sing-along method was a total failure.
1. Identify the independent variable(s).
• New “sing-along” method versus old method.
2. Identify the dependent variable(s).
• Scores on the mathematics achievement test that measure the effectiveness of “sing-along”
method.
