Yes, I do love math! Looking for an interactive problem solving app using various types of math contextual situations? This one is also available on ipads and walks students through understanding the problem before solving for the answer.
This is another site with a plethora of math ideas for teachers and games/activities for students. I particularly like the starters which give students an opportunity to make sense of math concepts in a challenging and fun way.
Teachers often use this site to set up spelling lists for students to practice independently. However, parents and even students themselves can enter in their list of words and begin practicing with practice tests, games, and activities.