In this counting galaxies learning exercise, students use a photograph taken by the Hubble Space Telescope and they divide the field into 16 square areas. They find the average number of galaxies in the cells, they find the area of one...

Point out the proper uses of parentheses with this informational handout! This resource explains how to use parentheses for side comments, numbers in a list, and citations of outside sources. Learners can read a series of examples for...