SPT:Electrical loops (Ec)
Build and model electrical loops
What happens in circuits?
Electric current: a flow of charges
A simple loop: current the same everywhere
The direction of the electric current
A summary, so far
Adding to simple circuits
Adding batteries to the circuit
Extra batteries: the electric circuit model
Adding a second lamp in series
Lamps in series: the electric circuit model
Teaching and learning issues
Helpful and unhelpful ideas about electric circuits
Where do the electrical charges come from?
Do the electrical charges move instantly?
The electrical charges move altogether
Conductors and insulators
Thinking fruitfully about circuits
Varying what's in the loop
The resistance sets the current for the whole circuit
Selecting and developing activities
A sequence to develop ideas about simple electrical loops
Powered by electricity?
Writing: a day without the electrical loop
Tracing out loops in battery-powered devices
Choosing materials for making loops?
Putting loops to work