This truly is epic. Very thorough guide to eBooks, devices, apps, and more.

great and varied examples

Curt Schleibaum's website. He presented at ICE 2016, and several of us found his site very useful.

I follow him on twitter. Said he had not updated the primary sources recently.

"Mathigon provides a series of free, interactive, online courses that are designed to complement 6th grade through college level mathematics instruction. The website was founded by Philipp Legner, who studied mathematics at the University of Cambridge and mathematics education at the London School of Economics. Legner, who currently works at Google, wanted to design a website that enabled learners to examine mathematics concepts by actively engaging in problem solving. Each course explains key concepts and skills through a series of short explanations, helpful visualizations, problem sets, and quizzes. Learners receive feedback as they work their way through each course. Visitors to this website can find courses by browsing through the course library, which sorts available courses by grade level (6-9; 10-12; College, Fun and More) and by topic (Geometry; Functions and Equations; Probability and Statistics; Calculus and Mechanics; Applied Mathematics, etc.)."

Great list of activities and resources for student projects with chromebooks. From Naomi Harm and a SimpleK12 webinar

"The Molecularium seeks to 'excite audiences of all ages to explore and understand the molecular nature of the world around them.' The project's website offers several tools that will be useful to educators. Nanospace, a web-based virtual theme park designed for students between first and eighth grade, utilizes games, activities, and short animations to provide an entertaining learning environment for children to explore the atomic world. In addition, under the Educators tab, teachers will find a Guide to NanoSpace that includes an overview of the games and attractions. Downloadable resources, such as a Teacher's Resource Guide to the Molecularium Project, are also available."

Pages and pages of resources and tools that you can use. For example, the language arts teaching tools page has many graphic organizers and other useful sites.

This article lists a few of them; you have to download the report to see all 28, Once you register on edweek, you are allowed three free articles per month.

nice annotated list