This online companion to "Chemistry - The Central Science," a textbook by Prentice-Hall, provides a good introduction to electrolytic cells and electrolysis of aqueous solutions. Practice exercises are also included.

Growing bean plants is a common science activity at this age. This task adds some rigor to the activity, by collecting actual growth data, providing practice for students in measuring and recording length measurements. Detailed...

Through informational text, interactive activities, practice problems, and video clips, students analyze how biological traits are passed on to successive generations.

Through informational text, interactive activities, practice problems, and video clips, students complete this learning module on the human skeletal system.

The Applied Science resource consists of practical activities that demonstrate the importance of standard procedures in scientific work. Students analyze qualitative data through a variety of activities. Some topics investigated are...

Discover the world of "similarity" in this test prep tutorial on similar triangles. Detailed explanation of concept with examples, challenging interactive practice, and a classroom activity that integrates math and science.