Obscertainer (The Original Black Box)

This is a remake of the original Ob-Scertainer classroom activity whose trademark was abandoned on June 5, 1984. With this activity, students investigate the Scientific Method. Activity sheets are easily found online.

The kit requires 5mm ball bearings https://www.amazon.com/gp/product/B09995R51N/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&th=1

Print with the lid number-side down on the build plate with no support.

Enjoy.