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====== Designing an Anemometer ======

===== Introduction =====

If this lesson interests you, there's lots to do:
  * Write the [[teachers guide|teacher's guide]]
  * Adapt the default [[evaluation form]]
  * Design and upload [[illustrations]]
If you're interested in doing any of that, great! Make a note on the [[:lesson index]] that you're taking charge.

Whether or not you're interested in writing a part of this lesson, please leave lots of comments on this page, the teacher's guide, and the evaluation form. Thanks!

===== Goals =====

==== Science/Technology principles ====
- Learn about wind energy devices in general and how they work

- Learn about how dynamos work




==== Practical skills ====
Not applicable
==== Design skills ====
Have students make their own designs to a set of specs (e.g. device that catches the wind, turns a motor), using available materials.
==== Team/Personal skills ====
Get students comfortable with designing and brainstorming in pairs.
==== Deliverable ====
Have a functional anemometer than can be used in future lessons.

===== Required knowledge and skills =====
PEN lessons that meet the requirement are indicated in brackets.
==== Scientific principles ====
Basic knowledge of electricity - voltage, current, etc. (salt water battery lesson) 
==== Technical skills ====
None, advantageous to have used a multimeter before.
===== Follow-up lessons =====
windmill building lesson, kite lesson

===== Required materials =====
==== Building materials ====
Bags off "stuff" that anemometers can be built from (thin spokes, cups that can catch wind) that either the students source themselves after sketching out some basic design ideas or are sourced by the teachers beforehand from the area the lesson is being taught in. (it's important that these are familiar materials for the students, wherever it's being taught)

- Small DC motors, one for each pair (or other decided grouping) of students
==== Testing materials ====
- demo-DC motor, with battery, LEDs and turnable handle attached (see picture)
==== Equipment ====
multimeters (one for each decided grouping of students)