Measuring the Rate of Change from an Observer to an Airplane
Measuring the Rate of Change of the Length of a Shadow
Observing Filling two Tanks
Investigating the Rate of Change as a Horizontial Tank is Filled
This a SINGLE frame; read Carefully
Investigating the Rate of Change as a Vertical Tank is Filled
This a SINGLE frame; read Carefully
Measuring the Rate of Change as a Conical Tank is Filled