Looking for some clever ways to prevent summer brain drain? We've got plenty of eco-friendly science experiments that are so fun that your kids won't even realize you're trying to school them during the off season. These savvy students discovered that plants won't grow near WiFi routers. See if you come up with the same results at home by replicating their experiement. This science project for toddlers only requires three household ingredients and teaches them about colors in a very hands-on manner. Got milk? Then make tie-dye milk to learn about mixing colors. Defy convention by showing your kids how something can be both a solid and a liquid by whipping up a batch of Dr. Seuss inspired oobleck. This recycled lava lamp is super fun and educational to make, and it will look totally groovy on a nightstand once complete. Bring the beach, and a lesson in oceanography, home by making an ocean in a recycled bottle. Create a miniature world of nature for your kids to marvel over by fashioning a recycled glass terrarium utilizing collected summer treasures.