The Photographer's Ephemeris - TPE is a tool to help you plan outdoor photography in natural light, especially landscape and urban scenes. It is a map-centric sun, moon and milky way calculator: see how the light will fall on the land, day or night, for any location on earth.
Padlet - Visual boards for organizing anything.
SunIZup - SunIZup helps you to know the timings of the various Sunlight phases including the Golden Hour and...
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.
Suntimes - Android app (and widget collection) that displays sunlight and moonlight times for a given location.
Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.