Below are links to various formats of a history worksheet I prepared for homeschool. It covers definitions of history, prehistory, and big history; and also the abbreviations BC, AD, BCE, CE, c and MYA.
These are included without any warranties as to fitness or whatever, implied or otherwise or whatever, etc, etc, blah, blah, blah.
History (pdf version)
History (LibreOffice version)
History (Microsoft Office version)