Posts Tagged ‘science’

Vegetable Dyes

Monday, April 19th, 2010

Dyes

I helped with Rebecca’s class science fair project (she goes to a co-op preschool), and we did plant dyes. It was a lot of fun, I did a live drawing story, telling a story and drawing pictures at the same time, for the motivation, which I’d never done before. Thankfully it was an easy audience! Here is my story:

One day the kids in Miss Leslie’s class went to the farmers market, looked around at all the different tents selling all kinds of different fruits and vegetable, and bought a red cabbage, carrots, onions, and beets. Then on the way home at the top of a hill someone thought it should be their turn to carry the carrots, someone else thought it should be their turn to carry the onions, someone else thought it should be their turn to carry the beets, and there was a little disagreement about who should be carrying the cabbage. There was a little bit of tugging, someone bumped somebody, and the whole class rolled down the hill together with the vegetables. At the bottom they picked themselves up, and being sturdy 3&4 year olds no one was hurt. But someone noticed that there was orange all over their pants, someone had a green knee, someone was brown all over, someone’s shirt had a big red splot and one kid’s face had turned purple. Well, they wondered, where did all these colors come from? So they went back to the classroom and set out to find out.

And let me tell you, a jar of cabbage juice that has been unrefrigerated for a week smells awful!

We didn’t set the dyes with anything, we just juiced the vegetables, stuffed muslin in with the juice in jars and let it sit for a few days. In addition to the vegetables we also used dirt and grass, which the kids collected. What smells worse than a jar of old cabbage juice? An art rack full of hanging strips of muslin that have been marinating in old onion skins, beet juice and cabbage juice. It was raining outside, so the rack was drying inside. I’m glad I wasn’t working in the classroom that day, when I came to pick Rebecca up, wow did the room smell. But it was all for SCIENCE! Hmm.

Pounding Flowers

Tuesday, December 8th, 2009

We modified this idea from Kohl’s ‘Science Arts’. Take two pieces of paper, and in between them stick colorful flowers and leaves.

Rubbing

Tape them down to the kitchen floor, and rub with the side of a crayon. This is both fun, and it lets you know where to bang in the next step. (Now when we do rubbings Rebecca talks about ‘finding’ things hidden under the paper.

Pounding

Bang bang bang with a rubber mallet.

Peeling

Peel the papers apart and see how the plant pigments have transfered to the paper.

We used our geranium (Pelargonium) hedge (yes we live in California where geraniums grow and flower in the dirt year round) and the colors were really lovely. The rose petals we tried weren’t so colorful, but they were from a lightly pigmented flower. (Yes, we also have roses flowering in front of our house in December. It gets a little boring frankly. I miss snow.)

The girls loved whacking the heck out of the plants with the rubber mallet, that’s why I suggest you use the kitchen floor and not a table you don’t want dented.

Also, have you seen Filth Wizardry’s Lego and hole punching card post? Combine paper crafts with LEGO blocks. Brilliant brilliant brilliant!