Students create both a noun
and verb wheel for reference use. The outer part as you can tell you cut out the 2 shapes.
Students label the left rectangle as 'tense' or 'case' and the right shape as 'endings' also along the left of the right shape (inner curve).
Students write out horizontally 'I, you, he, we, you all, they' or '1st, 2nd m, 2nd n, 3rd mf. 3rd n, 4th, 5th. They will line up the info when they write.
Students attach both parts with a paper brass fastener.
Next we list the tenses / cases and the students will write in the open window the corresponding forms. The students really like the noun one because the case endings are all organized. The students also like to write grammar notes about what each case does and each tense does.
When I get into passive forms I simply have the students make a new bottom section to which they can change when doing passive.
Note from McCarthy: if the brass fastener has a flat edge which you splay out behind the paper, consider using something else. The flat edge will make turning this difficult. Alternatives include; a push pin (into a cork board..), a paper clip (make a hole in the paper with a pen, partially unbend the paper clip and push it half-way through, then bend it again to get a tight grip). By far, the best thing I've ever used was a small plastic accessory button used to add accents to sweaters. It had a nice gold-colored front behind which was a knobbed stem over which a flat fastener is snapped. It's designed to quickly add a bit of glamour to a sweater, but it works wonderfully to hold two pieces of paper together and allow them to spin. I made a paper clock using them and it worked for 10+ years.