All living things---plants, animals, and people---are made of cells. I am made of cells. A cell is the smallest living part of me it is possible to imagine. A cell can be long, short, thin, fat,...
I eat food
I use my tongue and teeth when I eat. These help me grind up and mix my food. I use muscles, too, when I eat. I use muscles in my jaws, throat, esophagus, stomach, and intestines. Special organs...
I see my face
I see my eyes. There are eyebrows above them and eyelashes around them. My eyelashes and eyebrows keep dust and dirt out of my eyes. I look closely at one of my eyes. The colored circle is my iris....
An oven that stays cool
Could you bake a potato in an oven that doesn't get hot? Yes, you could, if it's a microwave oven. In minutes, the potato gets steaming hot, but the oven stays cool! And the glass or china dishes you...
How does a picnic cooler work?
What kinds of food can you take on a picnic? Any kinds you like---hot baked beans, steaming cocoa, chilled potato salad, or ice- cold lemonade. You can put the food in a picnic cooler, or in special...
Taking out heat
Just a few minutes after you put warm food in a refrigerator, the food feels cooler. But the air inside the refrigerator doesn't feel warmer. What happens to the heat? The heat doesn't disappear....
Moving molecules
Here is a way to show that hot and cold molecules move at different speeds. A hot-and-cold contest Materials - bowls (2, large) - food coloring - medicine dropper - pan (bigger than bowl) -...
Pleat and dye prints
Materials - containers (three) - food coloring (blue, red, yellow) - newspaper - paper towels (white) - water Before you start this project, cover your work area with layers of newspaper....
What is it?
Some of the very tastiest foods have the funniest names. Most of the time, you can't tell from the name what the food is. But these funny names do tell us that people in all parts of the world have a...
Food from the water
You're at a smorgasbord---a big Scandinavian meal--- in Sweden. A long table is filled with all kinds of fish, meat, and other food. You can take as much as you want. You can go back for seconds and...