Why Lesson Planet?
Seventh graders explore the scientific method and the reduction of bias in an experiment. They predict which color on a beach ball will be touched the most when it is tossed around the room. Using the tally method, 7th graders perform the experiment and collect the data. Calculators and spreadsheet technology are used to create graphs and charts. Students repeat the experiment and compare multiple results. They discuss how replicating scientific experiments assist in the reduction of bias.