Soil We walk on it, play in it, build with it, grow our food in it, and get antibiotics from it. But what exactly is soil? What makes it so important? Can we survive without it? In Explore Soil With 25 Great Projects, young readers learn how vital soil is to our lives. It filters the water we drink and the air we breathe, and most of the food we eat either grows in soil or subsists on plants that grow there. Soil is a very important part of our daily diet Activities such as exploring soil runoff, composting, and analyzing soil composition offer kids the chance to get their hands...
Soil We walk on it, play in it, build with it, grow our food in it, and get antibiotics from it. But what exactly is soil? What makes it so important...
Everything moves Kids run around the playground, cars drive on the road, and balls fly through the air. What causes all this motion? Physics Forces and motion rule the way everything moves through space. In Explore Forces and Motion With 25 Great Projects, readers ages 7 through 10 discover that the push and pull of every object on the planet and in space depends on how a force acts upon it. Things float because of a force called buoyancy, we stick to the ground because of a force called gravity, and we make footprints in sand because of a force called pressure. Physics...
Everything moves Kids run around the playground, cars drive on the road, and balls fly through the air. What causes all this motion? Physics Forces ...
