Measuring Mass is an introductory lab activity for students to practice using a double pan balance, making predictions, computing simple math calculations and percent of error. This lab works great at the start of the year to gauge the math skills of your young scientists. Materials needed: double pan balance, known masses, 6 different balls, access to a calculator. Editable Google DocumentSTEM readyLimited lab materials Cooperative Learning encouraged (Lab Tech, Scientist, Analyst, and Rese