River in Action Geology Teaching Model Subcategory_Prepared Slides supplying both current types to

supplying both current types to a single workstation for circuits and electromagnetism

dropping a chosen capacitor into a circuit without unsoldering during introductory RC-circuit and resonance investigations at the bench

Simple-form wheel and axle with a larger wheel on a smaller axle

and wood bobs on separate strings to a 42

there may be minor imperfections that do not affect physical function

River in Action Geology Teaching Model Subcategory_Prepared Slides supplying both current types toHand painted river development model tracking how a watercourse shapes terrain from headwaters through meanders to delta, with each stage labeled on a wall mountable backboard.