1. TEACHING CIRCUT ELECTRICITY
Can these be used to model both circuit electricity
basic concepts, series and parallel circuits,
and R=l/A /a.c.?

2. CIRCUIT ELECTRICITY What’s inside a straw ? What is it doing ?
( The molecules are moving ,
but there is no net movement !)

3. CIRCUIT ELECTRICITY
How can we make the air move ?

4. CIRCUIT ELECTRICITY
The same way we make anything move, apply a force !
(To make anything move, we need a force to accelerate,
and continue to apply that force if there are
resistive forces?

5. CIRCUIT ELECTRICITY What does the force produce ?
What happens when we increase the force?

6. CIRCUIT ELECTRICITY
What happens when we put
2 straws end to end ?

7. CIRCUT ELECTRICITY
What happens when we put
2 straws side by side ?

8. CIRCUT ELECTRICITY Let’s compare different size straws
Thin straws and fat straws
Short straws and long straws

9. CIRCUT ELECTRICITY Of course, we breathe in and out !
What happens to the flow of air ?

10. I hope this idea is useful and not wholly unoriginal !
It’s definitely a lot of hot, or at least warm, air
Thank you for listening
Andy Bruno
Alsager School