The Gumball Machine


Step 8: Marking

I thought this would come in handy for the teachers in the audience... This is called criterion referenced assessment. ya i know... "WHAT?" All it is is a bunch of guidelines for grading. It works well with kids because they can look at the sheet and understand the grade and how to improve. I always give kids time to re-submit after making changes. Woodworking is pretty subjective so I think its fair to let kids change things in their favor.

This grade method is also very objective (i hope). In our district we are NOT allowed to grade in a subjective way which is tough in our area so this is as objective as possible.

Gumball Machine Marking Sheet

NAME:_____________________________________DIV:____________TOTAL    /60








Missing holes, holes not drilled on center, wrong sizes, unsanded, Block not to specified size

All holes drilled, fairly smooth from top to bottom. Centered close but not perfect..Okay transition for gumball, sanding okay…needs more…block sized but not square

Holes all 1”, All holes centered perfectly, smooth flow in holes for gumball, sanded perfectly smooth, block exactly as specified, square, well sanded edges

Gumball Distribution

Does not work. Jams or allows flow of gumballs. Hard to turn

Works but needs to have block held while turning, gumball falls through but roughly

Spins perfectly, no effort needed, smooth but not wiggly. Gumball falls through perfectly

Decoration and Details

None or very little managed, parts on weakly or uneven.

Parts all there as in drawing but not exactly. Needs sanding or straightening, base is tippy

Stable, smooth, exactly like drawing. Sanded well, all pieces attached well… no glue-out, solid

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