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Trigonometric Ratios: A Geometer's Perspective
9th - 11th CCSS: Adaptable
What do all right triangles have in common? Young mathematicians investigate the trigonometric ratios in relation to right triangles. Their investigations lead to a hypothesis they use to determine unknown lengths in different triangles.
Measures of Spread: Crash Course Statistics #4
12 mins 6th - 12th CCSS: Adaptable
Sometimes the measures of center don't give us enough information. The spread of the data can tell statisticians much more about the data set. A video lesson, part of a statistics video series, describes different measures of spread such...