How to Start Using Classroom Assessment Techniques in Your Classroom by @n8ngrimm | Ecology of Education http://bit.ly/aArU3h Great post! How to Use Classroom Assessment Techniques in Your Classroom http://bit.ly/cekUHZ ~> Formative assessment moves student learning forward.
Flux-cored arc welding. Flux-cored arc welding (FCAW or FCA) is a semi-automatic or automatic arc welding process. FCAW requires a continuously-fed consumable tubular electrode containing a flux and a constant-voltage or, less commonly, a constant-current welding power supply.
Show All Items. Flux is used in soldering to remove oxides from the contacts of the parts to be soldered together. Fluxes can be made from hydrochloric acid, zinc chloride or rosin. Here is a simple and easy homemade rosin flux made from pine cones.