## Search Results ### Shedding Light on the Subject

9-12

Explore the development of a mathematical model for the decay of light passing through water. ### The Regression Line and Correlation

9-12
Investigate the relationship between a set of data points and a curve used to fit the data points. ### To Fret or Not To Fret

9-12

Explore geometric sequences and exponential functions by considering the placement of frets on stringed instruments. ### Whelk-Come to Mathematics

9-12

Explore sets of names and create bar graphs, pictographs, glyphs, and circle graphs. ### Using an Elevator to Evaluate Signed Number Expressions

6-8, 9-12

Using an Elevator to Evaluate Signed Number Expressions Using the idea of an elevator moving up and down, students will be given a small set of rules to add and subtract signed integers. The idea behind the method of adding and subtracting signed integers offered in these lesson is that the number of rules that s

### Visualizing Complex Roots of a Quadratic Equation

9-12
This lesson is based on the MTLT article, Visualizing Complex Roots of a Quadratic Equation by Thomas Edwards, S. Asli Özgün-Koca, and Kenneth Chelst. In this lesson students use various tools to discover the geometric relationship between complex roots of a quadratic equation and the graph of the associated quadratic function.

### Pythagoras, PVC Pipes, and Pianos

9-12
This lesson is based on the MTLT article, "Pythagoras, PVC Pipes, and Pianos by Danielle Divis. The lesson uses a music-related activity to engage students in using and connecting multiple representations of exponential growth.

### Math Metaphors

6-8, 9-12
In this lesson, students create metaphors to capture and explore their experiences as learners of mathematics with respect to their identity, sense of agency, and emotions.