Overview:  I created this lab activity to provide my students with a fun way to learn about the components of the plant and animal cell.  Students will investigate and understand that all living things are composed of one or more cells that support life processes, as described by the cell theory. A key idea includes that the cell structure and organelles support life processes (SOL LS.2b).

Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element.

Start a chain reaction, or introduce non-radioactive isotopes to prevent one. Control energy production in a nuclear reactor! (Previously part of the Nuclear Physics simulation - now there are separate Alpha Decay and Nuclear Fission sims.)