Wolfram Research
Wolfram Math World: Multiplicative Inverse
This site explains multiplicative inverse in nonzero real and complex numbers, as well as matrices. Also discusses how to detect the multiplicative inverse of complex numbers in a table.
Technovation
Curiosity Machine: Challenges: Engineer an Exoskeleton
This site challenges students to build a wearable device that will detect when your body moves. The site contains tips, a lesson plan, and a place for students to document their engineering design process.
Technovation
Curiosity Machine: Challenges: Engineer a Fuel Level Detector
This site contains a challenge for students to engineer a sensor that can detect how much fuel is in your tank. The site also contains tips, a lesson plan, and a place for students to document their engineering design process.
US Department of Education
Institute of Education Sciences: Students Struggling With Mathematics (Rti)
Taking early action may be key to helping students struggling with mathematics. The eight recommendations in this guide are designed to help teachers, principals, and administrators use Response to Intervention for the early detection,...
Oswego City School District
Regents Exam Prep Center: Complex Fractions
Resources to help you plan classroom instruction on complex fractions: three lessons, with example problems and step-by-step solutions, on recognizing and simplifying complex fractions; a practice quiz through which students work on...
University of Cambridge
University of Cambridge: Nrich: Number Detective
On this one page website sharpen your logic and place value skills while working on this challenge. The solution is available to double check your solution.
PBS
Pbs Kids Afterschool Adventure!: Operation: Shape Hunt Activity Plan
Calling all Shape Detectives! In this weeklong adventure, the children will explore and search for basic shapes as they go on a shape hunt. They will describe, match, sort and compose a variety of two-dimensional shapes, and create a...