https://www.commonsense.org/education/
Common Sense Education has curated an amazing array of tools by grade level, subject, skill, and purpose.
I've curated similarly below:
Effortlessly fun quizzing that can lead to productive formative assessment.
Paper response cards cleverly combine simple tools with mobile technology and allow teachers to modify instruction in real time.
Interactive student-response system that can help teachers spark conversation and learning through user-created polls and quizzes. Create quizzes, quick questions, and exit slips that can be graded with feedback for each student.
An interactive presentation and lesson delivery tool designed to enhance student learning during a slide show. Integration with Google Classroom. (Some elements only available in Premium.)
Create original multimedia presentations or draw from an extensive, growing library of pre-made offerings. Upload videos, images, audio clips, and PDF files as well as embed multiple-choice quizzes and polls.
Intro 1:53
Mentimeter helps to solve the problem of always calling on the same students by getting feedback from the entire class. Start your day with a class poll to gauge mood, warm up, or ask an essential question. Group discussions with questions related to themes or scientific discoveries are easily implemented.
Students curate information onto virtual bulletin boards using a simple drag-and-drop system. Students can start with a template or a blank page and add videos, text, links, documents, images -- basically anything -- to the wall and organize it, like a page full of Post-it notes.
Getting Started ...instructions in padlet format!
Allows teachers to create "grids" to facilitate discussions. Each grid is like a message board where teachers can pose questions, called "topics," and their students can post video responses that appear in a tiled grid display.
Offers lesson plans and downloadable worlds to help teachers integrate the game into the classroom. In Social Studies, students could work in small groups and create an Iroquois village. Math classes might use the game to learn about area and perimeter by creating a house, garden, and pool -- and supplying the correct dimensions.