# Ohio Journal of School Mathematics: Number 68 (Fall 2013)

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**Front Matter**

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**Shape Affects the Sound of a Drum: Modeling Area and Perimeter**

Adabor, James K.; Foley, Gregory D. pp. 1-6

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**Understanding Integer Addition and Subtraction Concepts Using Microsoft Word® Illustrations**

De Los Santos, Estella pp. 8-14

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**No 10-Element Subset of the First 100 Counting Numbers is Subset-Sum-Distinct**

Harper, Brian pp. 16-18

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**Investigating Non-linear Asymptotes and the Graphs of Rational Functions**

Harrell, Marvin; Slavens, Dawn; Richardson, Connie pp. 19-25

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**Getting Students Excited about Data Analysis**

Mathews, Susann M.; Reed, Michelle; Angel, Nancy pp. 26-32

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**Trigonometric Functions through Right Triangle Similarities**

Moyer, Todd O. pp. 33-42

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**Plotting the Effects of Industrialization: An Interdisciplinary Project**

Vens, Kasey pp. 43-49

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**Contest Corner: The 2013 State Tournament of Mathematics Results**

Flick, Michael; Kuchey, Debbie pp. 50-52

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**Mathematical Morsels: A Monthly Voyage of Problem Solving Goodness**

Bolognese, Chris; Edwards, Michael Todd pp. 53-54

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**Back Matter**

pp. 55-56

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