Geotechnical engineers are extremely important in deciding if ANY location has suitable conditions for building a structure. Focusing on reading maps, soil properties, and erosion, second graders are going to help decide where to build structures based on the earth below it!
With the model TarPuls in hand, second graders began collecting data on soil compaction. Beginning with soil that was not compacted, students tested the number of washers a TarPul could hold until it fell into the "river." They then compacted the soil once, and recorded the number of washers it could now hold. We began looking for patterns in the data, noticing if the number of washers increased, decreased, or stayed the same as the soil was compacted more. Awesome job second grade!