Math 9 Syllabus Current Unit:Shadows The central question of this unit is "How can you predict the length of a shadow?" The unit moves quickly from this concrete problem to the geometric concept of similarity. Students work with a variety of approaches to come to an understanding of similar polygons, especially triangles. Then they return to the problem of a shadow, applying their knowledge of similar triangles and using informal methods for solving proportions, to develop a general formula. In the last part of the unit, students learn about the three primary trigonometric functions and apply them to finding heights and distances.
THE PIT AND THE PENDULUM Exploring an excerpt from this Edgar Allan Poe classic, students use data from experiments and statistical ideas, such as standard deviation and normal distribution to develop a formula for the period of a pendulum.