The Conquest of England by the Normans: History Lesson #40

The Conquest of England was a turning point in English history. The Normans, led by William the Conqueror, began the Conquest of England at the battle of Hastings in 1066. The English army was weary from putting down a rebellion in the north, and less in numbers because the levies duty time had expired, and …

Different Types Of Steering and Wheels: Science Lesson #40

Differential Steering Differential steering is when you have two wheels and they move independently. To go forward and backwards, you make both of the wheels move the same speed. To turn left and right, you either have one wheel stop while the other still moves, or you make one of the wheels move slower than …