Oregon Department of Education
Building Number Sense
It's never too early to begin a child's math education. This collection of fun hands-on activities engage youngsters in building their number sense as they learn how to count objects, identify numerals, compare amounts, and much more.
Curated OER
What's Inside a Pumpkin?
Students made observations about the inside and outside of pumpkins. They determine that pumpkins are solids, use math vocabulary to describe the pumpkins measurements, write pumpkin booklets, and taste baked pumpkin seeds.