| Sports By the Numbers (5 titles) |
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| Bowling By the Numbers |
2.7 |
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| Golf By the Numbers |
2.6 |
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| Skateboarding By the Numbers |
2.5 |
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| Swimming By the Numbers |
2.8 |
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| Tennis By the Numbers |
2.7 |
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| Let's Measure More (6 titles) |
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| What in the World Is a Baker's Dozen? And Other Interesting Measurements |
2.4 |
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| What in the World Is a Centimeter? And Other Metric Measurements |
2.6 |
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| What in the World Is a Leap Year? And Other Time Measurements |
2.8 |
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| What in the World Is a Mile? And Other Distance Measurements |
2.7 |
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| What in the World Is a Ton? And Other Weight & Volume Measurements |
2.7 |
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