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# The Mathematical Implications of Lying

This article explores how statistics can be interpreted in different ways to yield different conclusions. It describes the outcome and discussion of two class activities. In the first, the results are interpreted to "show" that taking a group rather... (View More)

Keywords: Probability; Mean; Average
Audience: Middle school
Materials Cost: Free

# Contouring and Topo Maps

This example explains how contour mapping teaches both estimation and spatial visualization skills. To have experience visualizing 3-dimensional fields from a 2-dimensional map helps students throughout their mathematical career. This resource is... (View More)

Audience: Elementary school
Materials Cost: Free per student

# Logarithms: Taking the Curve Out

Logarithms are very handy when dealing with numbers at different scales but they are also useful helping us average measurements of physical phenomena that have nonlinear behavior. In this example, students learn about cloud albedo and calculating... (View More)

Keywords: Clouds
Audience: High school
Materials Cost: Free per student

# Flare Size

Learners will measure the diameter of a solar flare by making calculations using transparency grids overlaid on images of the Sun. This is the third activity in the lesson "How Does HESSI Take a Picture?" NOTE: The HESSI mission was renamed... (View More) after Dr. Reuven Ramaty, who was the original Co-Investigator for this NASA mission, and was a pioneer in the fields of solar physics, gamma-ray astronomy, nuclear astrophysics, and cosmic rays.

Audience: Middle school
Materials Cost: Free per group of students

# Angular Position on the Sun's Disk

This is an activity about determining the distance of a solar flare from the center of the Sun's disk. Learners will use transparency grids overlaid on images of the Sun in order to calculate the distance of a solar flare, similar to a signal... (View More)

# Earth, Earth's Moon and Mars Balloons

This is an activity about planetary sizes and distances. Learners will construct a scale model of the Earth, Earth’s Moon and Mars in relation to each other using balloons. They will use this model to predict distances and reflect on how... (View More)

# Why Is Snow Important in the Southwestern United States?

Water supply in the Southwestern United States depends on snow. Students discover its importance through analysis and evaluation of data, satellite images, space shuttle photos, and ground-based observations, and then apply their findings in a... (View More)

Keywords: Snowpack

# Who Will Feed the World?

Students confront the challenge of improving global agricultural production in order to feed increasingly larger populations. Students evaluate tables, maps, graphs, photos and satellite images detailing global population growth patterns and... (View More)

# Solar System Scale and Size

This activity is about planetary distances. Learners will create a model of the solar system using beads and string, and compare planetary sizes using common types of fruit and seeds. The lesson models scientific inquiry using the 5E instructional... (View More)

# What is Wind Chill?

This resource introduces the concept of wind chill, the formula used to measure it and relates it to the causes of hypothermia. A simple experiment using a pie pan, sand, fan and a thermometer demonstrates this concept. The resource is from PUMAS -... (View More)