Curated OER
Star Circles
In this star circles worksheet, students solve six problems given a diagram of a time-exposure photograph of the stars. Students determine the scale of the image, the location of the North Celestial Pole, they identify Polaris and they...
Curated OER
From Dust Grains to Dust Balls
In this formation of planets worksheet, students solve 6 problems including finding the equation for the mass of rocks as a function of time, finding the equation for the rate of growth of the mass of rocks and integrating these equations.
Curated OER
Why do Stars Rise in the East?
In this stars rise in the east instructional activity, students use geometry to show how the Earth rotates from west to east and why celestial bodies appear to rise in the east and set in the west. Students draw a figure and label given...
Curated OER
The Focus of an Ellipse
In this algebra instructional activity, students solve for the center of an ellipse by finding the focus. They use the focus formula when solve for conics. There are 13 problems with an answer key.
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