Free Downloadable Support Material for the
Forever Alexander Arrangement of Elements 3D Periodic Table Model

Randomized to Organized Lesson

Equipment to cut data boxes apart and clear tape will be required.

Boxes will be cut apart by students and assembled in most obvious order (which we expect will be oxidation number) and taped together.
Then, using the secondary set of information in the databoxes, the result of the primary sequence must be assembled with the new relationship without altering the first.

Top 20
Jumbled Top Twenty Element Data Boxes Without Atomic Numbers
If you can't drag this image to a graphics app - like Photoshop - click on it to go to the image alone and try there, any size that you like. If nothing works, email me to send you the graphic.
Students faced with determining the correct (and most obvious) order of these element boxes have only two references in each box, pretty much a top tier task.
This 20 element set includes Ar and K, which, when sequenced according to the oxidation numbers, are reversed from the proper order, and the last 3 elements become a problem when making the secondary connection. The valence numbers will not match - providing an opportunity for the teacher to discuss where pair reversals happens in the table - four in all: argon and potassium, protactinium and thorium, tellurium and iodine, cobalt and nickel.

Apart and Together Typical first steps
- putting them in order
Apart and Together Figuring out how
to keep the first intact
Apart and Together It ain't pretty,
but it's PERIODIC!


last update 4/1/14