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This hands-on activity demonstrates how the combining two fluids (confluence of two rivers, Mediterranean water spilling over the straits of Gibraltar into the Atlantic) involves two processes: (1) stirring - stretching of the bulk fluid, and (2)... (View More) mixing - exchange of materials on the molecular level (diffusion). Milk, chocolate milk, pie pans and stirring sticks are required for this activity. This resource is from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications. (View Less)
In this activity, learners build a sextant to measure the altitude, or height above the horizon, of an object. The activity was originally designed to accompany a previous NASA-funded educational program, entitled The Sun in Time.
In this introductory climate change investigation, students will set up at least one temperature monitoring station at the school and take daily minimum and maximum temperature readings. These local average temperatures can be compared to the global... (View More) average temperatures for the period of 1854 to 1990 found in the appendix, and compare their data with datasets used by scientists that detect global climate change. Supplies needed for this investigation include a minimum-maximum thermometer, hand-held thermometers, and data sheets. This activity is part of the Ground Truth Studies Teacher Handbook, which provides more than 20 activities to build student understanding of global change and remote sensing, and includes background chapters for teachers, glossary, and appendices. (View Less)