You are your children's first and best teacher. They will follow your example. Give them a good one; send them back to school full time ahead of where they had been. Read in front of them, to them, and with them. The library has a Spring reading challenge. You can listen to books together or individually on HOOPLA, Libby or Overdrive. Get some CD's for car rides. Play board games like checkers, chess, Othello. Do chores around the house that call for math - cooking and crafting. Take some Coursera courses together. Don't forget the Kahn Academy. You will forge an even better bond.