Learners assign oxidation numbers to atoms in neutral compounds and in polyatomic ions. Six examples are worked through in detail, and three problems are provided.
Nouns: Count and Noncount with "a Few" and "a Little": Part 4
In this interactive lesson, learners study examples of the expressions "a few" and "a little" with count and noncount nouns. They practice using these expressions in a drag-and-drop exercise of 20 sentences.
Users of this learning object review a case study of an online student and her experience with her instructor. They determine the principles of good practice for teaching online.
Learners solve word problems involving basic mechanical principles such as torque, horsepower, work, and power. Students who have problems with a particular word problem may try it again with a different set of numbers.
Students review the conditions for giving statements of praise in a way that will motivate employees. They then practice writing these kinds of statements.
Students read about the illegal practice of manipulating the boundaries of legislative districts for political gain. They then create their own gerrymandered districts in a drag and drop exercise.
Students use a map of Chicago to find their way to the Museum of Science and Industry. The activity offers practice in identifying directions on a map. A quiz completes the activity.