Learners study the significance of the quantum model and how scientific theories adapt over time.  In this investigative instructional activity students describe the contributions that scientists have helped develop the atomic...

Students investigate the structure of the atom through hands on activities. In this atomic structure instructional activity, students perform 4 activities showing indirect evidence of the structure of the atom and the parts of the atom....

Students simulate how scientists studied things they can't see like atoms. In this chemistry lesson, students predict what is inside the numbered obsertainers. They design a way to investigate what's inside without opening it.