Let your students make their own graphic organizers for free or use Bubbl.us to let your class brainstorm together. Easy to use site. You can make organizers without signing up for an account but you will not be able to save it and work on it later. You will need to finish it and print it in one setting or make an account where you can save it. It is free and you can sign up using your Google account.
Use Plickers for formative assessment. It is a free tool. You download and print the answer cards that look like puzzle pieces. They are numbered 1 – 63. You give each student a card. They turn the card to answer multiple choice questions. You scan the room with your iPad, iPhone, Android device or Android phone. It lets you collect the student responses in real time, quickly showing you the students responses and whether they are right or wrong.
Pixar in a Box
Students will love learning math, engineering, art, and science from Pixar. They show parts of their movies and how the made them. You get to see the math behind coding some of their scenes. they cover animation, modeling the environment, and more is coming.
CodeNewbie a site for those learning to program. They have podcasts, chats, and learning resources for people new to coding.
This site contains over 2400 free videos that will explain topics from basic arithmetic to calculus. biology, chemistry, physics, electrical engineering, health, finance, civics, art, us and world history, test prep and computer science, programming, animation, and Hour of Code. There are also practice exercises that will help you work your way through each subject.