Mathway - Mathway is a freemium math solving app that helps you find the solutions to any math problem you can imagine.
BookWidgets - BookWidgets is an excellent application that let you create engaging exercises in minutes and easily share a varied variety of beautiful and fun activities with your classroom and others.
Math.com - Math.
Padlet - Visual boards for organizing anything.
Delta: Math helper - With Delta: Math helper, quickly solve any math problem with an algorithm. Save time checking your homework or studying for a test, it’s free!
Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.