Make polyhedra from Magic cards.
A wonderful resource for teachers called Dynamic Paper. Need a pentagonal pyramid that's six inches tall? Or a number line that goes from ‑18 to 32 by 5's? Or a set of pattern blocks where all shapes have one-inch sides? You can create all those things and more with the Dynamic Paper tool. Place the images you want, then export it as a PDF activity sheet for your students or as a JPEG image for use in other applications or on the web.
make geometry teaching tools, then print them
WONDERFUL demonstration and extensions of the decanomial square
Explorations sensorielles magiques - La Semaine Montessori
Make a three-dimensional paper pyramid.
excellent geometry lessons and activities using Montessori materials
compass painting--fun way to familiarize yourself with how to work a compass
Island Conquer game freebie for practicing area and perimeter
BLOG POST - TIMES TABLES INQUIRY - Spirolaterals -Using this artistic activity students practice and learn their times tables, see patterns in their times tables, inquire into why some times table spirolaterals look similar to others, predict how other times table spirolaterals will look based on the tables they have already done. Take a look at this rich meaningful times tables activity.
Turn the multiplication table into spirolateral designs--pattern recognition, fact review, calculation, fine motor skills.
decorate a geometric net as a 2D design, then fold it to make the 3D shape
printable templates for cutting and folding 3D paper hearts
Math Fun: Geometric printables (free) for use with the geoboard for kindergarten and early elementary ages.
Modeling lines and angles using toothpicks... Students describe each in an index card glued to the back
covered our easel with contact paper and secured it with duct tape. I then put cups of pattern blocks on one side and cups of colored yarn on the other. The children have been exploring creating art on the sticky surfaces.