Play areas contain objects that fascinate young children. This column discusses resources and science topics related to students in grades preK to 2. This month's issue uses children's interest in collecting outdoor objects to develop their number sense and to build their understanding of math concepts.

Taking objects apart including old electronics, product packing, and living plants, helps children understand how things work. Documenting this "unbuilding" or "deconstructing" encourages children to first consider the entire object, then the parts, and finally, the purpose of the parts. This article provides a lesson based on…

For young children, a found acorn, stone, or lichen-covered branch can be a touchstone of an experience in nature. Children, however, should also be taught to "leave no trace." As the National Park Service advocates, visitors to natural areas should "Preserve the sense of discovery for others by leaving all natural and cultural…

This article reports on the wonders of winter weather, as it often inspires teachers' and students' interest in collecting weather data, especially if snow falls. Beginning weather data collection in preschool will introduce children to the concepts of making regular observations of natural phenomena, recording the observations (data),…

Spotting the Moon in the sky is like finding a treasure--unexpected and beautiful. When children look for the Moon in the sky, they don't know where to look. The Moon is far away and most easily observed at a time when most young children are sleeping. Because direct contact isn't possible, adults have to be creative in how they help children…