Dinosaur week: Fun & Simple dinosaur activity for kids! Maybe for older kids give each shape a numerical value and have them add how much their dino is worth. Can use with class to compare/contrast amounts, etc.
Homemade Geo Board is a simple DIY STEM project for mathematics. Geo boards are great for preschool, kindergarten and grade school math. Learn about shapes and create patterns and design with an easy to make wooden geoboard using nails and rubber bands!