Students build number sense using visual number frames (ten frames and twenty frames). Learners match quantities shown in frames to their corresponding numerals, developing subitizing skills and quantity recognition. Supports TEKS K.2.A (compose and decompose numbers) and aligns with Common Core K.CC.B.4, K.OA.A.3.
Skills: subitizing, number recognition, quantity comparison, visual math. Grades K-2.