This Solve Missing Values in Ratio Problems Using a Double Number Line video also includes:
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Organizing ratios with a double number line allows your learners to see the relationship between the values. This video shows how to take a ratio of books-to-DVDs and find how many DVDs one has if there are 15 books. The double number line organizes the information so they can see a pattern and find the answer. Your learners will see how they can shortcut to the answer with multiplicative reasoning. Video is second in a four-part series. Use prior video for same lesson with a table instead of double number line.
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