App of the Day picks are selected from the top edtech tools reviewed by Common Sense Education, which helps educators find the best ed-tech tools, learn best practices for teaching with tech, and equip students with the skills they need to use technology safely and responsibly.
Title: PhET Interactive Simulations
Summary: Massive cache of excellent (and free!) science and math simulations
Pros: Covers a huge range of topics across grades and accomplishes in the browser what might otherwise require tons of time and lab equipment.
Cons: Not as compelling as real-world simulations, the design is somewhat dated, and many tools require Java.
Bottom Line: Instantly add meaningful lab experiences to math and science classrooms for exactly $0? It's tough to beat that.
Read more here.