Funded by the National Science Foundation and collaboratively curated by the University of Colorado, Oregon State University, Duke University, Colorado School of Mines, and Worcester Polytechnic Institute, Teach Engineering is a "searchable, web-based digital library collection populated with standards-based engineering curricula for use by K-12 teachers and engineering faculty to make applied science and math come alive through engineering design in K-12 settings." The Algebra section is particularly well endowed. Here educators will find dozens of lessons and activities on topics as far ranging as Bone Density Math, Logarithm Introduction and Electromagnetic Radiation, and Air Pressure. Each of the lessons and activities informs educators how much the plan will cost, how long it will take, and offers a summary, educational standards, learning objectives, and other information.