If used in a poem, which sentence best suggests a joyful attitude? you better lock all of the doors before going to sleep. it is hard to say goodbye to my dear, old friend. the rolling of the gentle waves is very peaceful. the beginning of summer is always a such a thrill.

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a study of twenty 4th grade classrooms in which researchers ask the schools to systematically vary the time of day reading is taught, and collect weekly assessments of reading comprehension for each child over a three-month period.the collection of data, by a playground designer hired by the superintendent of schools, about the physical dimensions of school playgrounds, presence of fencing, and the kinds of equipment currently provided.a feasibility study for implementing a year-round school program, focusing on economic issues such a facilities utilization and transportation costs.an analysis of aggregate data comparing statewide high school graduation rates provided by the state department of public instruction, using county tax information.

What greek scientist created a screw to move water for irrigation?

Which states universal prekindergarten has been most effective in preparing children for school?