I like this hands-on approach to maths; great for those outdoor learners ~ this link opens up to an article on Kindergarten Math but so many of the activities can be adapted to younger children, like the leaf activity pictured here.
Let students learn how math concepts are connected to the real world as they design their own 3D TINY HOUSE! Area, perimeter, and geometry-- math is everywhere in this project based learning activity (PBL). Designing, creating, and problem solving are key features of this resource. Build a Tiny House! $