What do a folding iron board, lawn sprinklers, and a device for oiling engines on trains all have in common? They were all invented by Elijah McCoy, an African American inventor with 57 patents to his credit. McCoy is the subject of...

In this science worksheet, students research a specific time frame to discover major scientific developments and historical events. Then they identify at least 50 events and write a brief description of each. Students also create a time...