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Once upon a time, probability and statistics were considered specialized mathematics, taught sparingly at the elementary level. Now, the expectation is that children should have foundational concepts in statistics well in hand sometime during their 6th year, building on that foundation throughout the remainder of their academic career. Some standardized tests expect children to manage tree diagrams even earlier.
In truth, there is no need to wait until 6th year to introduce the concepts – the arithmetic is not complicated. Children can be quite successful once they have a solid understanding of equivalent fractions. Some experience with ratios is helpful, but not required. As such, the lessons can be wrapped into the curriculum whenever children need a fraction equivalency refresher or to see why fraction equivalencies are relevant.
Lessons guide children through the process of calculating the quantitative values associated with data, and of producing and interpreting graphical data, including Box-and-Whisker Plots. All of the lessons are developed in a manner aligned with the Montessori Method. This monograph includes blackline masters for technical vocabulary, full-page graphs for demonstrations, and a Follow-up Activity with Control of Error for each lesson.
Please note: This content is included in the full album, The Marvels of Montessori Math. If you already own Marvels, you have this!