Great Quick Reference for Solutions to Math or Science Formulas and Problems
Community Review for Wolfram Alpha
My Take
Unless you know what you are looking for, the answers the site gives can be far beyond what you seek or can comprehend!
Students might be a little overwhelmed with the generated responses and will need to practice using the site in order to feel comfortable using it in the future.
That being said, type in Global Warming and the response you get is a wonderful graph and statistic of temperature measurements over time on the planet.
How I Use It
This is a great look-up tool for STEM teachers who need to reference a formula or function for a particular problem or equation. It also shows graphs of trends and statistical charts. Type in "Human Population" and a variety of information is presented such as a summary, a population history chart, and a population history map. These different visualizations for information can be useful for different learners in your classroom.
Be careful and remember to spell-check, the site can be a bit picky.