Students analyze the rate of flow in an hourglass. They compute the volume of part of the hourglass and relate the flow of sand to the change in the height. They then use the CAS of their TI-89 and calculus to determine the exact rate of change.
Before the Activity
Students should have access to TI-89/TI-89 Titanium and TI-92 Plus/Voyage.
During the Activity
The document attached is the activity guide. Provide students with a printed copy of this document.
After the Activity
Review student results and, as a class, discuss questions that appeared to be more challenging. Re-teach concepts as necessary.