Inventing Mobiles and Critiquing Peers': Equipping Eighth Graders for Success
by Gus Goodwin
What was once known as "shop" or industrial arts is now called technology education. The name changed as the factory model -- where students followed blueprints to build birdhouses that all looked the same -- gave way to more designing, inventing, and problem solving. We call my class "Tech Lab" because it is a lab where students design and build inventions of their own. I find this the perfect setting to teach students how to critique their own, and other people's work, through rubrics we develop together.
In Tech Lab there is no one right answer to any problem or project, students are encouraged to design and create their own solutions to problems I pose to them. The best way to set up young learners for success is to let them participate in developing criteria for a "4" (or an "A") and then guide them along the way. During our recent kick-off to our eighth-grade expedition Grease, Guts & Genius -- a study of forces and motion, problem solving, invention and teamwork -- the students built junk mobiles, made of recycled materials, to hang from our ceilings. Their artistic and mechanical efforts producing the mobiles will later serve as examples for their physics lessons on forces and motion.
After an art presentation on mobiles, the art teacher, Nisu Logan, and I immediately began probing the students about what makes a good mobile.
The students generated these criteria:
- Teamwork
- Balance (symmetrical/asymmetrical)
- Craftsmanship -- Quality of how well it's put together
- Movement -- Can your mobile move freely?
- Theme -- Items relate in some way
- Space -- Area within or around an object
- Inspiring -- Makes a person want to build a mobile of their own
- Aesthetics -- Your idea of what is beautiful
We then asked the students to use their own criteria to critique a mobile I made out of broken tools from the lab. For some items, such as theme and craftsmanship, my mobile was clearly a "4." On other items the students were either quiet or polite. I took the opportunity to say, "This is what rubrics are for, you look at the mobile and decide whether it meets the criteria or not. It has nothing to do with what you think of me."
I asked the class, "Does this move freely?"
Ms. Logan gently pushed the mobile. Then some students began speaking, "Well yes, but not exactly how we described it."
And then other students spoke up," You know, Mr. Goodwin, it's not perfectly balanced either."
I agreed with each statement. "Now that I have feedback from you, can I go back and make some changes to my mobile?"
We all thought that was a good idea.
Then, based on our discussion, I wrote a brief statement to describe a 4, 3, 2, and 1 for each of the criteria. For example, the criteria for movement are:
- 4 Objects move freely and independently
- 3 Most objects move freely and independently
- 2 Objects move freely, but most move all together, not independently
- 1 Excuse me, you were suppose to make a mobile, not a statue
Designing criteria and creating rubrics are all about setting students up for success. Allowing students to play a role in the assessment process helps them become more responsible for their own learning and take more ownership in projects because they are meeting standards that they set for themselves.
Gus Goodwin teaches technology education at King Middle School in Portland, Maine.
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