Do you like to think about numbers? If you do, there are many books about mathematics that you will enjoy. You may find these and others in your school or public library. Ages 5 to 8 Beginning to...
Making things even
There was one trouble with the way people first measured things with their arms, hands, and feet. Some people have longer arms, bigger feet, and wider hands than others. If you and your father each...
Balances and coins
When people first began to raise crops, they had to carry the grain from the field to a storage place. They soon learned that they could carry two loads easily by hanging one load at each end of a...
Plant communities on mountains
> mountainside communities Forest, grassland, tundra, and even desert communities may all be found on a mountainside. A mountain is like a little world. It has many kinds of plant communities,...
Nature’s Neighbors
Do you know that plants live in communities just as people clo? A forest is a plant community of many trees. A pond is a community of many water plants. Prairies, deserts, and oceans are plant...