Ice cold lemonade on a hot day. Smiling children standing on the curb waving posters they made themselves. Maybe a chocolate chip cookie or a popsicle. A Normal Rockwell moment. “Lemonade for sale!” Your own slice of summer for less than a dollar. Yet the lemonade stand is much more than that. It is an opportunity for parents to teach their young children lessons in philanthropy, math, art, marketing and entrepreneurship. Every lemonade stand my children host to earn money for the latest must-have toy must be preceded by one held for a philanthropic purpose. It’s our family rule. They want a new video game? First they have to earn $25 for their next Kiva loan.