The simplest project in the new book Electronics for Kids: Play with Simple Circuits and Experiment with Electricity! by Øyvind Nydal Dahl is the one where you lean a small light bulb against the two terminals of a nine volt battery in order to make the light bulb turn on.
The most complicated projects are the ones where you make interactive games using LED lights and buzzers.
Electronics for Kids: Play with Simple Circuits and Experiment with Electricity! does almost no electricity theory. Thankfully. It simply delves in to messing around with electricity (and in so doing, provides basic theory, of course).
This is a book about how to play with electricity, not how to get a Masters Degree in electricity. In other words, any kid, the ones who seem destine for a career in electronic engineering and the ones who don’t, can get along in this book because it does not assume itself to be a building brick to a greater career. Yet the projects are interesting and informative and educational, and any kid who does a dozen of these projects is going to learn.
This kind of activity, which should involve parents for most kids, is the cure for the sense of depression you feel when you go to the toy store and look at the “science” section and everything you see is crap. Just get this book, order 50 bucks worth of parts, and get to work-fun. Then order some more parts, probably.
This book for kids is very kid oriented, as it should be. One of the first practical projects you build is an alarm system to keep your parents the heck out of your room. You can make a noisy musical instrument. You can make a device that makes sounds some humans can hear (the kids, likely) and some can’t (parents).
Although soldering is done, it is minimal and, frankly, can probably be avoided by using alternative techniques. But really, it is not that hard and one should not be too afraid of it.
A lot of the projects use and develop logic circuits. Kids actually love logic circuits, I think because they end up rethinking a bit about how tho think about simple relationships. And, it is good to know this stuff.
Unlike many electronic kits you can buy (which can be quite fun and educational in their own right) this approach does not rely on ICs (integrated circuits) that produce magical results with poorly described inputs and hookups. There are some basic ICs, including gates, an inverter, flip flops, and a timer. These are very straight forward circuits that are mostly (except the timer) really just very fancy switches.
The web site that goes with Electronics for Kids: Play with Simple Circuits and Experiment with Electricity! gives you a list of all the parts used in the book, with enough information to find them easily on line or at a hardware or electronics store. The book suggests a multimeter, which is probably the most expensive thing on the list. (this one is perfectly good and is about 35 bucks.) Other tools include a soldering iron and related bits, a wire cutter, some scissors, tape, etc.
Many of the parts, including a breadboard, LEDs, hook up wires of various kinds, and pretty much all the resistors, capacitors, etc. etc. can also be used with the more sophisticated Arduino projects, should you end up going in that direction.
This is a really fun book. If you have a kid of the right age (maybe from six to 12, with 100% adult involvement under 10 years) get it now, secretly, get some parts, and work your way through several of the projects. Then, make it (and the parts) a holiday present. Then look really smart.
Here is the overview table of contents (the book is much more detailed than suggested by this top level TOC):
PART 1: Playing with Electricity
Chapter 1: What Is Electricity?
Chapter 2: Making Things Move with Electricity and Magnets
Chapter 3: How to Generate Electricity
PART 2: Building Circuits
Chapter 4: Creating Light with LEDs
Chapter 5: Blinking a Light for the First Time
Chapter 6: Let’s Solder!
Chapter 7: Controlling Things with Circuits
Chapter 8: Building a Musical Instrument
PART 3: Digital Electronics
Chapter 9: How Circuits Understand Ones and Zeros
Chapter 10: Circuits That Make Choices
Chapter 11: Circuits That Remember Information
Chapter 12: Let’s Make a Game!
Appendix: Handy Resources