What technologies make our lives easier? Why were they invented? Objective Students will: * Cite specific textual evidence to support analysis of science and technical texts. * Determine the central ideas or conclusions of a text; provide an accurate summary of the text distinct from prior knowledge or opinions. * Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 6-8 texts and topics. Background For homesteaders, life on the Plains was rough and hard. Everyone had to pitch i Duration: 90 Minutes.