Glue has been utilized as an adhesive for thousands of years and was originally extracted from animal tissues, casein, and plant resins. Although glues from such naturally occurring items are still produced, many of the modern substances referred to as glue, such as the Elmer’s School Glues commonly utilized in educational facilities in the United States, are synthetic. The composition of the specially-formulated School Glue makes it a popular choice for young students, who are sometimes inclined to use too much at once, since any spills can be easily cleaned up with only soap and water. The development of glue sticks, which are easier for some children to more precisely utilize than liquid glue, has also helped curb the number of messes that occur in the common classroom.

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