This bilingual SciGirls en Español activity is a set of two components that builds on the model of science inquiry presented in the short, Spanish language DragonflyTV-SciGirls en Español video. Educators are encouraged to use the companion video as a catalyst or motivator to get students enthused about doing science investigations. In Bosque Lluvioso Templado (Temperate Rain Forest), Emma and Gracie visit the Southeast Alaska Discovery Center in Ketchikan, AK, spurring them to investigate tree growth rates in three areas of Tongass National Forest. The activity set begins with an Icebreaker, a simple activity which introduces one skill that is part of the full inquiry process. The icebreaker activities are intentionally short, lasting perhaps 30 minutes to one hour. In this quick activity, learners will identify a group of deciduous trees to study. Once the species has been recorded, the circumference of the trunks will be measured at the same spot on each tree, as well as the height of the lowest branch. Then learners will calculate the diameter and anaylyze the result to look for a relationship between tree diameter and height of the lowest branch. The second component of the set is a main Investigation, a more rigorous activity that includes all the elements of a full science inquiry. This activity is often a replication of the video investigation seen on SciGirls en Español. Allow an hour or two to complete a main Investigation, perhaps even letting it spill over across several days. This activity is an investigation into tree growth rates. Groups of learners will count tree rings to determine each tree’s age. A thorough sample of other measurements will then be taken to calculate the trees’ fastest, slowest, and overall average growth rate. Presenting the results in a table allows learners to compare data for different types of trees. (English version of the DragonflyTV GPS: Temperate Rain Forest video and activities also available)
This resource can be found on the DragonflyTV website.