Stellar Brightness and Distance
Support an argument that differences in the apparent brightness of the sun compared to other stars is due to their relative distances from the Earth.

Daily and Seasonal Sky Changes
Represent data in graphical displays to reveal patterns of daily changes in length and direction of shadows, day and night, and the seasonal appearance of some stars in the night sky.

Earth's Gravitational Force
Support an argument that the gravitational force exerted by Earth on objects is directed down.