School's out for the summer, but it takes work to keep that knowledge in during the break. It's called the summer slide - when a lack of formal education leads to a loss in learned material.
Charlottesville's LearningRx says students can lose two and a half months of grade-level math skills over the summer, and it can take teachers more than a month to reteach what students have lost. The good news is even simple games can ward off the summer slide.
LearningRx Director Dargan Coggeshall said it is important to "engage in activities, cognitively stimulating activities so that the effect of the summer slide is not as dramatic."
Some educators say turning to year-round schooling is the best way to prevent the summer slide.
Click here for a list of activities that will keep your kids engaged during the summer.