Saturday, October 18, 2014

MORE MODELS SOLIDIFY CONTENT KNOWLEDGE

PERIODIC TREND MODLES BUILD ON CONTENT KNOWLEDGE


"Mr. Miller, did you realize that the periodic table is arranged in more ways than just atomic number?"

"There is a definite pattern that for the elements!!!"

These are just two of the many statements that students shared with me as they built models based upon electronegativity and ionization energy in class this week.


The Periodic Trends Lab (Electronegativity in 3D) is very basic and utilizes drinking straws (color straws @ Smart & Final) and a 96 well tray. Students cut straw lengths to match the values of electronegativity values.  As students build the model they can see they very distinct pattern of the periodic arrangement of the elements based upon electronegativity.  


Students followed up the Electronegativity trend model by creating a similar model for Ionization Energy using a scale of 1 cm = 300 kJ.