A great mind exercise. Brain Teasers - Site has brain teasers of the week, solutions and archives of past puzzles. Students can submit answers directly. Little Explorers Alphabet Learn the alphabet by exploring the web. Children's Literature Authors and Illustrators - Web sites links to authors and illustrators.
Children explore the physical properties of balls.
Through exploration, the science process skills of observing, collecting data, recording, and comparing data are used. Students focus on the relationship between various balls and ramps. The unit was developed by Education Development Center, Inc., with funding from the National Science Foundation. This web site shows children engaged in an activity with tubing and a marble that correlates well with the lesson on building a complex system from Balls and Ramps. They compare living things, identifying likenesses and differences.