This is a sample 6th grade performance task for the common-core math assessment being developed by Smarter Balanced testing consortium. This is a sample 6th grade performance task for the common-core ...

"The application is horribly slow.", "I don't get the response even after I get my coffee.", "This application is useless". Sounds familiar? How many times have we heard these quotes or or felt like ...

Relays are electromechanical devices that use a magnetic solenoid to actual a switch. When current is passed through the solenoid coil, it produces a magnetic field. The magnetic field is strengthened ...