Site with good resources to encourage inventive and innovative thinking, creative play, etc. Includes inventor stories, creativity/problem-solving games, more.
Enter a problem, and a unique URL is created. Once shared with others, a group can collaborate by adding questions, comments, solutions, etc. Very easy to use and effective way to solve problems.
Practice in addition, subtraction, multiplication, and division, including difficulty levels far beyond basic facts. Free unlimited access for classrooms!
"Cacoo is a user friendly online drawing tool that allows you to create a variety of diagrams such as site maps, wire frames, UML and network charts.
Cacoo can be used free of charge."