# Math Activities [1]

### Best Buy

In this activity, students use real life examples to understand discount shopping and math by comparing 10% off to $10 off differing values.

Source: Math for All. See full activity here [2].

### Juice Box Geometry

Participants use geometry to determine the volume and surface area of juice boxes to determine the most efficient packaging, as well as what percentage of the volume inside actually contains juice.

See full activity here: Scientific American: Bring Science Home [3]

### Population Growth and Biological Evolution

Making use of rice (or similar), participants will be able to model and graph exponential population growth as it doubles through several cycles, leading to discussing about overpopulation, environmental pressures and resources, carrying capacity of a given area and solutions to these problems.

Source: Teaching About Evolution and the Nature of Science [4] provided by the National Academy of Sciences. See full activity here [5].

### Sizing Science: The Geometry of M&Ms

This activity discusses how to calculate the volume of M&Ms candy in several ways.

See full activity here: Scientific American: Bring Science Home [6].

### Understanding Geological Time

Using a strip of paper and a standardized scale, students will represent geologic time, including important dates in both human and the earth’s history. Children will gain an appreciation for the magnitude of geologic time as they struggle to fit all recent events into their scale. Additional exercises such as calculating percentages of earth’s history that include evidence of life, human life, dinosaurs, etc. can expand this activity.

Source: Teaching About Evolution and the Nature of Science [4] provided by the National Academy of Sciences. See full activity here [7].