For kids that have a basic interest in math, try using daily riddles to keep them thinking throughout the day. At breakfast, you may ask your child a riddle like, "What number has three tens and four ones?" or, "What is a mathematician's favorite dessert?" Your child can take the day to think about the riddle and tell you the answer when you're working on math practice worksheets after school!
Divide students up into teams of 4, and number them off so each person plays the role of Team Member 1,2,3, or 4. Ask a question from the worksheet and provide 30-60 seconds for each group to agree upon an answer. They should ensure every person on the team understands the reasoning, as they won't know which team member will be responsible for answering the question. Then, randomly call out a number between 1 and 4. The person on each team whose number was called writes his or her answer on an individual dry erase board (or sheet of paper). Team members can NOT help in any way, or they will lose a point. On your signal, the designated student holds up his or her board/paper to show the answer, and you (or a student volunteer) can award and record points on the board. When time is up, the team with the most points wins.