Let's Explore introduces young children to some of the most fundamental concepts of our everyday world. These twelve volumes present the basic elements of natural science, mathematics, and time measurement. Carefully coordinated text and photographs excite natural curiosity, stimulate discussion, and stir a desire to explore even further.Everything in our world is surrounded by air. We can't see air, but it's there, and we can't live without it. Let's explore what air is made of, what air does, and why air is so important.
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