Combine science and reading skills with a reading comprehension exercise. Kids read four paragraphs about energy conversion and answer some reading comprehension questions about the information they have read.

Young scientists discover how sea otters' habitats have changed due to human impact. Through conversation, video observation, and story reading, scholars identify how human interactions change a specific ecosystem in both positive and...

By the end of this section, you will be able to explain the human body's consumption of energy when at rest versus when engaged in activities that do useful work and to calculate the conversion of chemical energy in food into useful work.