Graham Public Library. BrainSTEM. 4:00 p.m. For grades 3-5. Marshmallow, chocolate, graham crackers, and a little help from the sun. Who knew learning about solar energy could be so delicious? We’ll be building solar ovens and learning about harnessing the Sun’s radiant energy to make s’mores! To register or for more information, call (336) 570-6730.