Take a closer look at how McCormick’s Reaper worked.  Roll over parts to see an explanation.  How many simple machines can you identify?  How do they all work together?  What provides the power to the reaper?

SOL Correlation:

VS.4 The student will demonstrate knowledge of life in the Virginia colony by

1. a)explaining the importance of agriculture and its influence on the institution of slavery;
   

2. b)describing how European (English, Scotch-Irish, German) immigrants, Africans, and American Indians (First Americans) influenced the cultural landscape and changed the relationship between the Virginia colony and England;
   

VS.8c The student will demonstrate knowledge of the reconstruction of Virginia following the Civil War by c) describing the importance of railroads, new industries, and the growth of cities to Virginia’s economic development

2.3 The student will identify and compare changes in community life over time in terms of buildings, jobs, transportation, and population.

2.7 The student will describe the differences between natural resources (water, soil, wood, and coal), human resources (people at work), and capital resources (machines, tools, and buildings).

3.2a The student will investigate and understand simple machines and their uses.  Key concepts include a) types of simple machines (lever, screw, pulley, wheel and axle, inclined plane, and wedge);

3.7 The student will explain how producers use natural resources (water, soil, wood, and coal), human resources (people at work), and capital resources (machines, tools, and buildings) to produce goods and services for consumers.