Generative LCA for 5th graders

This time last year I did a workshop with the 5th graders at Fall Creek Elementary on Life Cycle Assessment (LCA) in the context of toy design. LCA is a tool used by sustainability engineers to assess the impacts of industrial products, services, and systems on the environment and on people. Even though I don’t normally work with kids, I love working with this bunch. It’s such a great exercise to prepare content for 5th graders. It forces me to be clear and to get to the point!

Last year I started the workshop with a belief I have: I believe that kids can make better toys than the ones they can buy in stores.

I made three discoveries during this workshop that confirmed my belief. I’ll list them here, then flesh them out below:

1. All of the students picked up LCA quickly

2. At least half of the students knew what a 3D printer was

3. One of the students made an amazing insight about USE phase of LCA

1. INTUITING LCA.  To teach LCA to this group, I held up a plastic french fries toy and asked “How did this come to be in the world?” Their answers sounded a lot like the phases of LCA: Design, Pre-production, Manufacturing, Sales, Distribution, Use, Durability, End-of-Life (EOL). Of course I had to give them prompts every once in a while, but overall, it came from them intuitively. All they needed was to be asked the right question.

2. 3D PRINTERS. You may wonder what 3D printers have to do with kids making toys. Well, up until very recently, if you wanted to manufacture something, you needed millions of dollars and connections to all kinds of equipment and services that were hard to access. Plus, even if you made something, you had no way of selling or distributing it to the people who wanted it. Enter the desktop manufacturing revolution. Today kids have access to the tools of production and distribution. And many of them know it. They expect to be able to come up with an idea on the computer and manufacture it on a machine in their garage, online service bureau, or local maker space. So not only can kids come up with better ideas for toys, they can actually manufacture and sell them. Incredible.

3. USE PHASE of LCA. So the use phase of LCA looks at the energy or resources that a product uses while in the hands of the consumer. A great example is a washing machine. If you are assessing a washing machine, yes, all of the other phases of LCA are important, but “use” is huge because the machine is used daily for many years. Thus, we want to know how much energy and water is used in each wash. But with a plastic french fries toy, it’s hard to assess the use phase. Except for one student who said, “What about the message that the toy conveys while in the hands of the user?” I almost fell over. Yes, plastic french fries promote values about nutrition, don’t they? The values that an object conveys while in use is huge and I’m going to cover this explicitly in this upcoming workshop.

All of that said, when I asked them to come up with an idea for a new toy using at least one phase of LCA as inspiration, that connection didn’t happen for a lot of them (at least not during the 50 minute session I was working with them). And I get that, it’s a lot to synthesize in a short amount of time. So this year I might prepare a pair of worksheets to help them synthesize more quickly. One worksheet for the plastic french fries (the before) and another worksheet for their toy invention (the after). I’ll ask them to highlight the LCA phases they took inspiration from on the “after” worksheet. A lot to pack in to a 50 minute session. But they are young and full of creativity. I think they’ll do great.


LCA on

online 3D printing service

Marketing fast food to kids