Snack: Cut broccoli into bite-sized
pieces. Steam over (not in) a little boiling water for a few minutes. In the
microwave, melt 1 T. of butter. Stir in 1 T. of lemon juice - either
fresh-squeezed from a lemon, or bottled juice. Use the rest of the lemon juice for
today's activity. Pour over the veggies, and eat and enjoy.
Watercolor paper (buy at an art store)
Set of watercolor paints & brush
Small container for water
Lemon juice in small container
Yellow construction paper
It's just as much fun to take paint AWAY
from a painting as to put paint on there! And you can do it with a little bit
of chemistry. Over and over again, we see that science and art go together.
Today we're going to use a little science to improve our art project.
First, on a small
piece of watercolor paper, paint a shape or an animal or anything you'd like
with watercolor paints. You can use one or more colors. You might want to think
of something that lives around water, since watercolor paint looks wet, even
when it's dry.
First, with a clean, wet brush, dab water
on your paper where you want to add color. Then come back with watercolor paint
on the brush. Clean brushes as you switch colors.
Just make sure most of your lines and
shapes are pretty wide - wider than the width of the tip of Q-Tip.
And here's why:
watercolor painting is dry, decide where you would like to have some white
stripes, polka dots, blobs or other white shapes. And decide where you would
like to have spaces that are a lighter hue or tint (lighter intensity) of the
same color you painted with.
For example, you
might have a butterfly with purple wings. You can come in with a Q-Tip dipped
in lemon juice, and make some faint dots or designs that will dry as lavender -
lighter purple - and make the wing more interesting and lifelike.
When you are ready, dip a Q-Tip into the
lemon juice. Squeeze it with your fingers a little bit so that it's not
dripping wet. Use it to take away paint from the places in your watercolor
painting that you'd rather have white or a lighter color.
Play around with it until you get a
painting that's even better with some of it taken away! You may need to use
Why does the
lemon juice take the color away? Because it has a lot of acid in it. Acid is
used in all kinds of ways to clean surfaces and remove unwanted areas. Lemon
juice and vinegar are examples of common household acids which are often used
for cleaning windows and other objects.
It's great when acid works on a surface
and removes part of it, on purpose. It's bad when it's unintended or
accidental. Acid can ruin things!
But in our case,
the acid in the lemon juice makes our painting better and more interesting.
"Frame" your picture
on a slightly larger piece of construction paper - yellow, of course, to remind
you of the lemon juice that made your picture special.