Texas Instruments
Texas Instruments: Probing an Aquatic Ecosystem
In this activity, students' use a pH sensor and Temperature Sensor to measure and compare the pH and temperature of three aquariums over a period of several weeks. They will compare and understand how plants and animals affect the water...
PBS
Pbs Learning Media: Acid Lake
Students will add acidity to a healthy lake to see what happens to plants and animals in this interactive activity adapted from EcoKids.