Science Play And Research Kit: K’nex Test Tube Rack

In my previous article, I posted the press release for the Science Play and Research kit. There are 76 days left in the competition. I can only produce one article per week due to my work schedule thus I’d only be able to come up with a chemistry set with 11 experiments. It wouldn't be much of a chemistry set would it? So, I’ve decided not to actually enter the competition but instead to post ideas for the set so whoever wants to use them can incorporate them into their design for SPARK.

According to the FAQ page:

Does the entry need to be based on the science of chemistry?

No, it is encouraged for entries to explore any field of science or multiple fields.

I suggest, if I may, that you also include physics (mechanics, electronics, or what have you). For electronics please review the following articles since they are simple to build and all based on a basic 555 timer circuit:

http://www.science20.com/square_root_not/snap_circuits_science_hot_liqui... http://www.science20.com/square_root_not/snap_circuits_science_cable_tes... http://www.science20.com/square_root_not/snap_circuits_science_create_ca... http://www.science20.com/square_root_not/snap_circuits_science_pencil_an... http://www.science20.com/square_root_not/snap_circuits_science_magnetic_...

I hope to be able to post up some more 555 circuits that explain other electronic components such as the transistor before the deadline.

One construction toy that you can include in the kit is K’nex. I often see K’nex sets at second-hand stores like Goodwill or Salvation Army so I decided to see if K’nex can be co-opted for science. The following set of photographs is a test tube rack that I built out of K’nex: