How do people determine if something is acidic or basic? Learners make their own acid-base indicators using red cabbage and then determine the acidity and alkalinity of different substances. First, they test substances of known pH and...

While many mutations are neutral, those that appear advantageous increase in frequency in a population. Scholars use illustrations to make predictions about populations of mice. They follow it up with a video to confirm or refute their...

Groups create a set for a play or story they select, build a model, and share their stage with the class. The team explains the rationale for their choices and the mood they feel their staging creates.

Discover the terms of the Neutrality Acts banning arms and war materials to countries at war. These laws were designed to prevent the United States of America from being entangled in a possible foreign war.