Curated OER
How Many Stars in the Milky Way?
Students perform an experiment in which they will use a statistical method called `sampling' to count to a billion (and beyond). Students practice sampling by estimating the number of characters on a page from the classified section of a...
Curated OER
How Many Stars are in the Sky?
For this star count worksheet, students solve three problems using a given polynomial and its logarithm to determine the number of stars in a given area.
Curated OER
Power Functions: A Question of Magnitude
In this power functions worksheet, students read about determining the brightness of stars using a magnitude scale. Students solve 4 problems including finding the magnitude differences of stars and determining equivalent magnitudes.
Curated OER
Modeling a Planetary Nebula
In this modeling a planetary nebula worksheet, students use a diagram to calculate the intensity at different radii from the center of the nebula. Students use the Pythagorean Theorem to determine the distance between two points on the...
Curated OER
Eagle Nebula - Close-up
In this Eagle nebula worksheet, students solve 4 problems including finding the size of the nebula field, determining the scale of the image, determining how large the nebula is in millimeters and determining the size of the smallest...
Curated OER
Light Travel Times
In this travel time of light worksheet, students read about the NASA satellites and space probes that transmit radio signals at the speed of light across huge distances. Students solve 3 problems about data transmission from space to...
Curated OER
A Study of Astronaut Radiation Dosages
In this astronauts and radiation worksheet, students use a graph that shows the altitude of an astronaut versus the exposure to radiation to solve 5 problems. Students interpret the graph to express the amount of radiation at varying...
Curated OER
Details from an Exploding Star
In this nebula worksheet, students read about the Crab Nebula and calculate the average speed of the expanding gas. They determine the size of the smallest clumps of gas and they draw the diameter of the solar system to scale.
Curated OER
Black Holes...V
In this black hole activity, students read about the black hole in the center of the Milky Way Galaxy called Sagittarius A and observe a Chandra image of the area where the black hole exists. Students solve two problems which include...
Curated OER
Pulsars and Simple Equations
In this pulsars worksheet, students read about the spin rate of pulsars and they are given two equations that predict the spin rate in the future of these two pulsars. Students solve 6 problems related to the given equations and...
Curated OER
Stellar Temperature, Size and Power
In this stellar temperature of stars worksheet, students use a given formula that relates the stellar light output with the surface area and temperature of a star to solve 3 problems. Students find luminosities of different stars and...
Curated OER
Measuring Speed in the Universe
In this measuring speed in the universe instructional activity, students use photographs of 3 astronomical phenomena including supernova explosions, coronal mass ejections and solar flare shock waves to find how fast they move. The...
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Sketching Cylinders
Students create nets of cylinders. In this geometry instructional activity, students calculate the surface area of cylinders and other solids. They show their understanding of three-dimensional shapes by solving problems.
Curated OER
The Stellar Magnitude Scale
In this stellar magnitude scale worksheet, learners use a scale showing the magnitude of objects in the sky to answer 5 questions about the brightness of the moon, the planets and stars.
Curated OER
Groups, Clusters and Individuals
In this galaxies, clusters and planets worksheet, students solve 5 problems including determining sunspot groups on the sun in a particular day, finding the number of individual galaxies present, determining the number of stars in...
Exploratorium
Exploratorium: Museum of Science, Art and Perception
This museum provides numerous online exhibits about everything from the science of sports to the Hubble Telescope. Each exhibit includes learning ideas, fun activities, articles, and learning games.