Pre-algebra
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Proportional Reasoning
Ratios & Proportional RelationshipsStudents use ratios, percentages, and segmented bar graphs to compare groups fairly, identify hidden patterns, and investigate how knowing one variable can help predict another.
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Percentages and Nutrition Labels
Ratios & Proportional RelationshipsStudents explore percentages through nutrition labels, calculating and interpreting percent values, investigating how rounding affects reported data, analyzing a real McDonald's...
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Rates in Air Travel
Ratios & Proportional RelationshipsStudents explore rate through commercial air travel: starting from their own speed estimates, they confront variability, then use real flight data to calculate rates, analyze...