Go on a counting scavenger hunt! For young children, you can keep the hunt simple and indoors, go on a hunt and count how many bedrooms, windows, doors, bathrooms, etc are in your house. For older children, you can even take this adventure outside. Look for certain kinds of animals, plants, flowers, you name it! Add in another element of fun (for any age) and create a graph for them to track their finds!
Get in the Kitchen! I was very hesitant for a while with my son when it came to the kitchen. I worried about the GIANT mess that would be left when he was done "helping". You don't even have to take on the entire project with them! You can start small and let your child help with measuring certain ingredients. You can modify the difficulty of the 'lesson' by talking about the different kinds of measuring cups and seeing what other measurements can also add up to equal one cup, etc.
In addition to good teachers and involved parents, children should be involved in extracurricular activities that support math. In the state of Michigan, students can join a club at their school that plays a game called Academic Games. This form of gaming is challenging for children. It helps them to develop their academic skills as well as their math skills. Children can start playing these games as early as the second grade. This form of gaming will teach children how to play the game of Equations, a form of Algebra, at the age of seven. These skills are called Higher Order Thinking Skills.
At the end of all levels, children are greeted by a celebration and encouraged by a computer voice to change topics.