Before engineers design a solution to a problem it is important to collect evidence to support thinking. To say that a material should be used without the evidence to back it up is non-scientific.
Second graders must make a recommendation to Mrs. Brinza as to the type of material she should use in a bib for her daughter who is learning to use an open cup. They're designing an investigation to see which material absorbs the most liquid. We'll be comparing our data soon...so be on the lookout for our results!