Science 9:  We began with a short review of atomic theory, followed by a lesson on Bohr Diagrams which show electron arrangements around atoms.  We drew Bohr Diagrams for the first 20 atoms on the periodic table, and we noted any patterns on the table.  The Density lab followed, where we measured a variety of parameters to determine the density of 2 solids and 2 liquids.  We made a lab report, with the usual sections found in a Scientific Report:  Purpose, Materials, Procedure, Data, Calculations, and Results. We finished by going over the "rules" of our classroom.  I have not needed to clarify the rules, because students at RSS generally know what to do,  but I thought I should  speak about them anyway.  Please:  arrive on time, bring your tools, complete all the coursework, and treat your classmates well.

Science 8:  We reviewed our Onion Staining Lab, and discussed aspects of experimental design.  The Independent variable is what the scientist changes (the variety of stain).  The dependent variable depends on the independent variable (quality of the image in the microscope field).  All other factors are held contant (same slide, same cover slip, same microscope, same onion, etc)   We looked at this animation to learn about diffusion,  then we did a short inquiry to determine which conditions, hot or cold, will make diffusion occur more rapidly.  In the second half we wrote notes on Energy, and we did the Energy WS which is due Friday.  Learning update reports were given out today.