**NSA Challenge: Recycling for a Cleaner World**

__NSA Challenge:__

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**Quadratic Functions**

This lesson is an interactive introduction to quadratic functions. Students will conduct experiments in order to determine a quadratic regression equation of launched objects at a given angle of elevation. A STEM Specialist will help students interpret their results and engage students in hands-on learning experiences that demonstrates how quadratic functions are used by STEM professionals. Students will begin to explore real-life applications for finding the vertex of a quadratic function as well as its zeros.

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**Obesity and the Conservation of Energy**

Students will investigate the global issue of obesity by designing an experiment to calculate the calories released by foods when the energy stored in them is changed to heat. Students will measure the number of calories that they consume and the number of calories that they use in one day. Comparison between their intake of calories to their output of calories will be used to evaluate their diet and lifestyle. Students will use the conservation of energy principle to explain both their lab results and the principle of caloric balance.

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License

**Is it too Loud? (Physics)**

*Is it too Loud?* is a STEM-centric physics lesson that allows students to explore the concept of sound. Students will answer the complex question “is it too loud?” by using frequency to assess auditory health. Hearing damage is permanent and exposure to a loud noise or prolonged exposure to mid to high intensity sounds can drastically affect the range of human hearing. The range of hearing can be a general way to evaluate auditory health. Students will determine the range of their hearing from the lowest frequency to the highest frequency.

**Is it too Loud? (Biology)**

“Is it too Loud” is a STEM-centric biology lesson that allows students to develop answers to the complex question *Is it too Loud? *Students will analyze how the ear and brain work together as a system to perceive and interpret sound. Students will conduct investigations to determine if sound levels are dangerous or acceptable and ascertain which part of the auditory system can be damaged by dangerous sound levels. Students will examine models of the human ear to identify and explain the role and function for each part of the ear required for hearing.

**Introduction to Cellular Biology and Fractals**

Students will engage in the study of cellular biology by drawing real-world connections to cellular biology concepts and the work performed by STEM professionals. This lesson is intended as an introductory engagement activity to the study of cells. Students will review terminology and concepts studied in middle school and then begin to extend their understanding to a high school level.

**Indirect Measurements (Geometry)**

In this lesson, students will engage in learning experiences that will allow them to apply trigonometric ratios to indirectly measure objects. A STEM Specialist will be used to introduce the lesson and draw connections between content and the work performed by STEM professionals. Students will then use trigonometric concepts to indirectly measure objects that are too tall to measure directly. Students will develop posters demonstrating the application of trigonometric ratios and justify their approach and solutions to the real-world problem.

**Distracted Driving (Algebra I)**

Students will explore the real-world problem of distracted driving by analyzing the relationship between auto accident fatalities over time and auto accident fatalities over time due to distracted driving for the years 2005-2009. Students will create scatter plots and linear regression equations as well as analyze their results. Students will interpret the meaning of the slope, y-intercept, correlation coefficient, and graphs of the residual values in the context of the accident and distracted driving data.

**Asexual Reproduction – Do Viruses Fit This Method?**

Students will explore the structures and functions of a particular virus, how it replicates, and the effects it can have on the human body. Pairs of students will generate a poster of what they learned from their research. A STEM Specialist will introduce the different types of immunology tests used to detect viruses and engage students in learning experiences that demonstrate how the tests work.

**Math at Work: Construction**

Achieve and the America Diploma Project have published a resource for teachers to help examine how high-level math today's workplaces. Find useful case studies in this series. http://achieve.org/math-works-brochures