**Title:** Density

**Description:**
Density is the ratio of mass to volume. Density will be introduced to students by a demonstration of coke verses diet coke. The teacher will then solve density problems for the students on the board. The class will then complete a lab on the density of plastics. After lab the students will compare results. Each group will present a Powerpoint presentation of their results.This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone Family Foundation.

**Standard(s): **

[S1] (8) 1: Identify steps within the scientific process.

[S1] CHE (9-12) 1: Differentiate among pure substances, mixtures, elements, and compounds.

[S1] ENV (9-12) 1: Identify the influence of human population, technology, and cultural and industrial changes on the environment.

[MA2013] AL1 (9-12) 4: Use units as a way to understand problems and to guide the solution of multistep problems; choose and interpret units consistently in formulas; choose and interpret the scale and the origin in graphs and data displays. [N-Q1]

[MA2013] AL1 (9-12) 5: Define appropriate quantities for the purpose of descriptive modeling. [N-Q2]

[MA2013] AL1 (9-12) 6: Choose a level of accuracy appropriate to limitations on measurement when reporting quantities. [N-Q3]

[MA2013] AL1 (9-12) 15: Rearrange formulas to highlight a quantity of interest, using the same reasoning as in solving equations. [A-CED4]

[MA2013] AL1 (9-12) 17: Solve linear equations and inequalities in one variable, including equations with coefficients represented by letters. [A-REI3]

[MA2013] AL1 (9-12) 28: For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities, and sketch graphs showing key features given a verbal description of the relationship. *Key features include intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity.** [F-IF4]

[MA2013] AL1 (9-12) 34: Write a function that describes a relationship between two quantities.* [F-BF1]

[MA2013] AL1 (9-12) 37: Distinguish between situations that can be modeled with linear functions and with exponential functions. [F-LE1]

[MA2013] AL1 (9-12) 38: Construct linear and exponential functions, including arithmetic and geometric sequences, given a graph, a description of a relationship, or two input-output pairs (include reading these from a table). [F-LE2]

[MA2013] ALC (9-12) 1: Create algebraic models for application-based problems by developing and solving equations and inequalities, including those involving direct, inverse, and joint variation. (Alabama)

[MA2013] GEO (9-12) 40: Apply concepts of density based on area and volume in modeling situations (e.g., persons per square mile, British Thermal Units (BTUs) per cubic foot).* [G-MG2]