Educational developer SpongeLab  has released Tree Dazzler , a fun holiday browser game to help you get into the holiday spirit. Help Santa’s elves decorate the tree by matching three or more ornaments, getting the highest score in the shortest amount of time. The studio has also released a new set of holiday themed shared learning  offerings, which includes Christmas Tree Cluster. Make a human Christmas tree with your family, then study a star cluster that’s shaped like one. You can also conduct a science experiment featuring all your leftover holiday decorations! Plus, learn the science of winter in the natural world.