This is a free app but it can not be accessed on a browser. Students can create their own biodiversity and keep the plants and animals alive in their world.
Crayon Physics is a paid for app that fuses conceptual science learning with problem solving.
MentalUP is a blog that has clickable links to puzzles and critical thinking online games for students.
Little Alchemy 2 is a free online game that encourages creative thinking and problem solving by creating science and computer systems.
This is an awesome website that has a lot of informational and interactive videos on math concepts to get students thinking deeper about math topics.