Test the limits of small, inexpensive, off-the-shelf hobby motors by building a motor-driven crane capable of lifting 100 pounds - a tall order for a motor that weighs only a few ounces! First, construct the world's simplest electric motor to gain insights about how they work. Then calculate the torque requirements for your crane, and add gears and pulleys to achieve mechanical advantage.

The Christian conversion of the Roman emperor Constantine was a momentous turning point for the faith. Learn about the relationship of the Roman Empire to early Christianity, and the specific reasons why Christians were persecuted by Rome. Grasp Constantine's motives for converting to Christianity and for becoming directly involved in theological controversies.

Trini’s excited to enter Big Green, her giant cabbage, into the Alaska State Fair, but a suspicious moose keeps nibbling its leaves. Then, Molly wants to get her Native name when she discovers that others in the community have one!

Investigate the anatomy of birds, and how understanding anatomical features aids us in identification. Then learn about the fascinating range of bird feathers, and their different functions. Observe how understanding the flight patterns of birds helps identify them in the field. Last, compare two common birds, as an exercise in using the knowledge you've learned so far.

Look now at events surrounding Jesus's death that we cannot know about with certainty. Assess the plausibility of the Gospels' accounts of his arrival in Jerusalem, the date of his crucifixion, and the matter of his burial. Grasp how Christian writers made changes in the accounts of his death to serve theological ends.

The trio is thoroughly wiped out after running around the backyard and Luna treats them each to a little piece of chocolate. They are absolutely amazed to discover that chocolate actually comes from a fruit on a tree! But how can you grow a chocolate tree? They’ve just gotta know! After a yummy chocolatey experiment, it’s time for the absolutely yummiest make believe ever!

Shift your attention from biology to archaeology, where you will dig up several answers about the Homo sapiens family tree. Here, Professor Lacy introduces what archaeologists do and how they work. He then examines the history of tools such as the hand-ax and the microlith, which had a tremendous impact on human population.

Oogleberry is sprayed by a skunk and he is embarrassed to ask for help. He learns that when you need help, for whatever reason, you should always ask.

Study molar and partial molar quantities, which are indispensable for describing what happens when materials are combined. Focus on the case of water mixed with ethanol, which adds up to a surprising volume. These ideas lead to one of the most important variables in thermodynamics: chemical potential.

The last decade has seen Nordic noir enter the American mainstream, though they have been popular in their homeland for half a century. Professor Schmid takes you through this progressive form of mystery and suspense fiction, showing how many examples of Nordic noir provided a socially conscious look at powerful themes such as complicity with the Nazis, racism, misogyny, corruption, and class.