In this activity, student mix a given quantity of salt with a fixed volume of water. Mass and volume measurements are made before and after mixing to determine if these quantities change. Students observe that mass is conserved during dissolving while volume is not.
Categories: Teacher Demonstration
In this demonstration, laser light is bent as it travels through a sugar (or salt) solution of varying concentrations. read more
Categories: Lab/Student Activity
Students watch a documentary about ecosystems. They then blog about the subject and investigate one problematic and post their results on a blog. Other... read more
Categories: General Interest, Lab/Student Activity
After learning an entire unit, many students find it a daunting task to work through assigned review questions to prepare for final evaluations. One of the many strategies that we use in teaching to... read more