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)

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)

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)