Try this Number Sense Intervention for your 1st Grade Math Groups. Are your students struggling to gain a deeper understanding of Counting Objects to 30 - 100? These Number Sense Worksheets for a 1st Grade Small Group Math Intervention are packed with engaging lessons focusing on Number Sense that use the Concrete, Pictorial, Abstract (CPA) approach. Utilizing the CPA method developed by Jerome Bruner, students are given the opportunity to experiment with mathematics in various ways. Want