In this optics review worksheet, students complete 50 multiple choice questions on light reflection, diffraction and interference.

In this chemistry 301 instructional activity, students answer questions as it relates to the electron configuration of given elements. Students use the periodic table to assist in their interpretation of the questions provided.

In this online interactive history worksheet, students respond to 9 short answer and essay questions about the achievements of Niels Bohr. Students may check some of their answers on the interactive worksheet.