Sharing a quarter century of teaching, the Smarter Teacher blog will focus upon the Three C's: Think Critically - Communicate Clearly - Work Collaboratively.
The Three C's of education are the most important skills necessary for teachers to develop in the students entrusted to their care.
"The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn and relearn." - Alvin Toffler -
McGraw Hill provides a wonderful tutorial for teaching concepts of buoyancy. This tutorial provides opportunities for students to experiment with the buoyancy of a cargo craft. The craft can be adjusted to varying widths in order to demonstrate the effects of surface area on the displacement of the fluid.
The craft can be set afloat in water, alcohol or mercury so that students can understand the effects of visocity and fluid density on the buoyancy of the object. Students can add cargo in varying incremental units and witness the displacement of the fluid. A graduated overflow allows students to measure the volume of fluid displaced and data tables provide a comparision of volumes, mass and density of the fluid and objects.
There is also an option in the tutorial to add force vectors of the fluid, craft and cargo increments to assist students in incorporating free body diagrams to compare buoyant and gravitational forces.