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**Earth and space science**

**Mathematics**

Now showing results **421-430** of **481**

This is a lesson about the mathematics of auroras. Learners will be exposed to the mathematical formulas that are used to estimate how much magnetic energy is available in the magnetic tail region of Earth. This is the nineteenth activity in the... (View More) Exploring the Earth's Magnetic Field: An IMAGE Satellite Guide to the Magnetosphere educators guide. (View Less)

This is an activity about polarized light. Learners will use a polarizing filter to build and calibrate a simple polarimeter, use the constructed polarimeter to find sources of polarized light, and measure the angle of polarization of polarized... (View More) light sources and attempt to measure the strength of polarization. This activity is from the Touch the Sun educator guide. (View Less)

Materials Cost: Over $20 per group of students

In this activity, learners will explore the properties of color filters and filter bandpass by observing light sources using diffraction grating and color filters and create a graph of percent transmission versus wavelength to characterize the... (View More) bandpass of the filter. This activity requires various light sources, a diffraction grating, and two or more color filters that are transparent to some wavelengths of light and opaque, or nearly opaque, at other wavelengths. This is an activity in the Touch the Sun educator guide. (View Less)

Materials Cost: Over $20 per group of students

This is an activity about the movement of sunspots. Learners will project an image of the Sun using a telescope, binoculars, or a pinhole projector, observe and record sunspots over the course of several days, and calculate the speed of the observed... (View More) sunspots to, therefore, determine the rotation rate of the Sun. This activity is from the Touch the Sun educator guide. (View Less)

Materials Cost: Over $20 per group of students

This is an activity about oscillation. Learners will observe, time, and graph the data of the side to side motion of the mirror used in the soda bottle magnetometer activity to determine the mirror's oscillation period. This activity requires prior... (View More) construction and experience in use of a soda bottle magnetometer, which is the eighth activity in the Exploring the Earth's Magnetic Field: An IMAGE Satellite Guide to the Magnetosphere educators guide. This is the ninth activity in the guide. (View Less)

This is an activity about spectroscopy. Learners will build a spectroscope with a scale for measuring wavelength and use it to observe various light sources. They will identify spectral lines in more than one light source and analyze the collected... (View More) data. This activity requires diffraction grating material, several light sources, and gas emission lamps and power sources. (View Less)

This story can be used to teach that results must be checked against known facts to see if they're reasonable. It is designed as a follow up to "The Fall of the Ruler." This resource is from PUMAS - Practical Uses of Math and Science - a collection... (View More) of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications. (View Less)

This activity shows how an ordinary ruler can measure human reaction time (RT). Learners will convert a standard ruler into a time ruler (relating time and distance) and measure each others RT. They will also calculate means and variances and the RT... (View More) required to accomplish a specific task. Additional resources and an extension to this activity are available. This resource is from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications. (View Less)

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) than an individual perspective is ultimately beneficial to the individual. In the second, a variation is added "showing" that telling the truth is better that lying. This resource is from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications. (View Less)

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) from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications. (View Less)