As a teacher, one of the big frustrations at the beginning of every school year, is having to reteach skills to students that were taught to them at the previous grade level.
While it's nice to have summers off, it really can "hurt" students in terms of the academic knowledge that can be lost.
It's vital to let parents know the importance of reading, practicing basic math facts, etc. during the summer months. The more they engage in these type of activities, the more they'll retain.
Below are some links with great resources, tips, and online activities to help students avoid the Summer Slide.