These 20 math task cards are a fun way to practice math skills all the while learning about the Presidents of the United States. They are perfect, especially around Presidents'. Day, but can certainly be used year-round. Each card has a historical fact and math problem on each task card. These task cards work well for the later end of 4th grade(after advanced computational skills have been learned) through 6th grade. Laminate these task cards to last for years and store them in a ziplock bag or